Jump to content

Stargazers Lounge Uses Cookies

Like most websites, SGL uses cookies in order to deliver a secure, personalised service, to provide social media functions and to analyse our traffic. Continued use of SGL indicates your acceptance of our cookie policy.

Leaderboard


Popular Content

Showing content with the highest reputation on 06/01/19 in Posts

  1. 13 points
    Taken with SW150//750, EQ3 pro, unmodded D5300, APT Guiding with PHD2, Stacked and Processed in DSS, Pixinsight 60 x 40s, 40 minutes of data + 20 darks and bias frames. Guiding was pretty bad on that night, declination error was good ( around 0.4" ), right ascension was around 2.3", therefore there is some visible star trails in the image. Every 5 minutes the declination will completely throw off to about 9", I have to stop everything and guide again, which is really annoying, I believe this is my mount's problem because I am pushing the weight limit of my EQ3 pro to about 6.5kg lol. Will try to play around the PHD2 settings next time out to improve the values. Advices are greatly apppreciated. If you want to give my stacked image a try, I will email the TIFF file to you.
  2. 12 points
    Tycho, Clavius, Moretus and some others... 68.7% illuminated Capture with a ASI224mc using IR Astromik 742nm filter. Prime focus with C11"
  3. 12 points
    Hi all, This is the first image i post here. It has been taken in August/September from my backyard. It is one of my first image taken with my new Moravian G4-16000 CCD camera. Taken with my TeleVue NP101is modified with a new focuser : Modifications can be viewed here : http://www.poigetdigitalpics.com/photo-equipment3.html SH2-171 in LHa - R(ha)GB : Full resolution image in 4k x 4k at this link : http://www.poigetdigitalpics.com/G4-16000/sh2-171 New Version.htm Enjoy, Florent ?
  4. 11 points
    Hi all, This is my first shots of Saturn and Jupiter taken the last summer with my new ZWO ASI178MC. Equipment : -Sky-Watcher Maksutov-Cassegrain Ø150mm /1800mm -Sky-Watcher NEQ5 PRO Goto mount -ZWO ASI178MC camera -ZWO ADC corrector -Pierro-Astro electric Focuser Focus v2 controlled by the PC station in ASCOM. -Imaging Software : FireCapture -Integration Software : Autostakker 3 -Processing Softwares : PRISM v10 / Registax 6 / PhotoShop CS6 / Lightroom 6 - Wide Gammut Monitor for processing : NEC SpectraView Reference 272 (27") calibrated with x-Rite i1 Display Pro colorimeter Saturn : Sequence of 11,000 images. 8,800 added with a sub-exposure of 88ms/image. Focal length : 1800mm Jupiter : Sequence of 6,000 images. 4,800 images added. The exposure time for each image : 40.7ms. Focal length : 1800mm
  5. 11 points
    Happy New Year to everyone. After what seemed like an age we had a night (well half a night) of clear skies a couple of days ago I managed a couple of hours on M81 -M82 while waiting for the Jellyfish Nebula to appear from behing a tree, as it happens the clouds rolled in so that didn't happen. As usual this is processed to within an inch of it's life and cropped, this needs a few more hours yet. 47 x 180 sec lights from 3/1/19 32 x 60 sec lights from 9/12 20 flats for each plus bias frames no darks (dithered in BYEOS) processed in PI LE and PS 150PDS, HEQ5, Modded 500D,
  6. 10 points
    We were lucky enough to spend two weeks over Xmas and New Year on La Palma with the family. It was my first visit to the island and loved the place. First week we stayed at the Northwest (Puntagorda), that coincided with full moon, so did not do much imaging wise. However, a very memorable moment was when stepping outside between the main curse and dessert of Xmas eve dinner and within 5 seconds of looking up, I saw a large fireball meteor sweeping accross the sky and breaking up into several pieces. Second week we stayed about 10mins drive from Santa Cruz, so was worried about light pollution from the capital, but the first night it become obvious that the sky was still one of the best I've ever seen. The small light pollution is in the form of sodium lights, so can be dealt with by filters (apart from some flashing LED xmas lights around). The equipment I took was a Fuji X-T1, modded Canon 6D, Samyang 135mm and 35mm lenses, and Fornax lightrack II. Unfortunately, at the end I couldn't use the Canon as I found out there that its remote release connector is different, I use a Canon compatible intervallometer for the Fuji, and just assumed it was the same for the 6D. At home I've been using the 6D with the laptop, which I did not take with me to minimise the amount of kit. Learnt the hard way that everything needs to be tested before the trip and assume nothing. Anyway, I was enjoying using the X-T1 / 135mm combo on the Fornax, it was very quick to set up and worked very well. Fast lens meant that max exposure I needed was 2mins, which the fornax coped with easily. We visited the GTC and was hoping to see one of the other telescopes, but I've messed up the booking and bought tickets for the GTC twice, so that will have to be another time. Also drove up to the observatories in the evening and was hoping to do some imaging, I unpacked the equipment, but was so cold with strong winds (at some point I had 3 jackets on) that I basically bailed and just did some very wide field shots. The fun bit was when we got too cold and was ready to go down, the car wouldn't start. ? It was around 10pm, nobody around, no moon, so pitch dark. I'm still not sure why the car battery went flat, I run the Fornax off the cigarette lighter socket, but its power consumption could not be the reason. To have voltage in the cigarette lighter, the key had to be turned to ignition on, so I guess in that state something was taking current in the car, we did not have any interior / exterior lights on. We thought we might have to sleep in the car, when after about 20mins I saw a car driving down, jumped in front to ask for help, and the chinese couple inside very kindly helped to push the car to jump start it. This was a major struggle as the parking platform was lower than the road, so the car had to be pushed up the ramp. When the car eventually started I was ready to hug those friendly people but they were in a hurry... The sunset and the views of the milky way were amazing up there, still I've decided after this adventure that I rather put up with the little light pullution I have on the balkony of the nice warm house and my bed nearby. So, overall a few mishaps, but it just means that I definitely have to go back again in the summer, timed so that it coincides with new moon. Anyway below are some of the quickly processed images I took, also have some 46P data but haven't managed to process that to give anything decent yet. All processed in Astroart / Gimp, however my processing skills are not very advanced, still need to learn about layers, masking, etc.
  7. 10 points
    WOW! Had a great view! Used my Pocket Sky Atlas to plan the night, then I just shot right out there! Saw the 7 Sisters (Pleiades), then hopped to the Orion Nebula! Used my ES 18 mm to find it then switched to the Morpheus 12.5 mm and could actually see wispy parts of the Nebula! ( I guess that’s what it was! LoL!) Really amazing! Called the wife out to take a look. Next I want to find Andromeda! Greg
  8. 8 points
    This was an "in betweener". I shot subs periodically between primary targets-needing something to shoot during periodes of bright Moon, as well as after primary targets had set at relatively early times (12-2:00). As such, it is not very polished, as many (most) subs were taken during poor seeing and transparency conditions. In addition, this target is in a very tough spot for me--typically bathed in a light dome of the city of New Haven. The FOV orientation is wrong as well. But its better than no image at all, from my perspective. Considering the condition and location, I was surprised that I was able to render an image not destined for the digital waste basket. Only having 18 OIII subs doesn't help. FSQ 106 with .6x reducer and ASI 1600 with 3um Astrodon filters Ha-95 5min OIII-18 5min
  9. 8 points
    Cloudy as usual so I entertain myself with processing other peoples data. This time from the public data pool at Astrobin posted by Robert Huerbsch. 6 hours of HaOiii data from a 5" refractor. I mixed Ha and Oiiii 50:50 as a green channel and I aimed at processing it in a way that would make it look "natural" or RGB. All done in PS. Is it just me that see it as an alien running towards the finish line in an interstellar marathon?
  10. 7 points
    Hi After a really boring 2018, the Sun woke up with a lot of activity in this new year. I post several pictures taken between december 31 and january 2. Thanks for looking Lunt 80 + asi 1600 (close ups asi 120 + powermate) Lunt 80 + asi 120 +powermate Takahashi FC100DC+ asi120 + powermate
  11. 7 points
    Hi everyone Gotta love that Takumar. This must go down as a good way into AP. Recommended. If it records this many stars in Perseus, I can't imagine how many it will pull out of Sagittarius. Phew... Thanks for looking. 700d + takumar 200: 60 minutes
  12. 6 points
    Lunt 60mm Blackfly cam 1st of the year. I do hope they get better as the year goes on.
  13. 6 points
    I've been messing around on and off for a couple of years with an Altair Astro RC10 I bought from UK-ABS (replacing the focuser and backplate, remounting the primary in the cell and playing around with the collimation) but this is my first post of any images from the scope despite the files sitting on my hard drive for ages. The first image contains only data from the RC10 (without a flattener) and a G3-16200 CCD (5h lum and Ha 1x1, 3h RGB 2x2, ) and was colour calibrated using the Pixinsight Photometric Colour Calibration module. The second contains the same RC10 lum data but RGB and Ha data is a mix of some from the RC10 and the rest from my old C8 (using an Optec 0.5x reducer and atik 490EX CCD) totaling slightly more data overall albeit at a lower resolution. Colour was calibrated for the second image using the standard Pixinsight CC module. Although there's too much saturation (and slightly less fine detail) in the second image I think I prefer the colours even if the first image is supposedly more accurate. Grateful for any opinions/comments, Paul
  14. 5 points
    Hi everyone Slowly coming to terms with wide field processing and am pleased with the €60 Takumar of 1972 vintage. Modern lenses seem far less sharp and seem poorly corrected by comparison. Or maybe I've only tried bad ones. I get the feeling I'd have to spend €silly to get anywhere near Asahi quality... Anyway, coming from -relatively huge- reflectors, you notice the acute lack of aperture. I suppose at most you have around 40mm, so even 5 minute exposures get you nowhere. This was close on 4 hours, all perfectly executed from guiding and alignment, through meridian flip and realignment to the not-a-single-dropped-frame capture via the EKOS scheduler; all I did was hit start and left for the new year celebrations. Linux reliability par excellence:) Don't like the bright stars. I think this is due the lens diaphragm. Anyway, thanks for looking and any suggestions for technique improvement most welcome. 700d + takumar 200mm
  15. 5 points
    Curt Roslund was a Swedish astronomer who discovered seven new open clusters spectroscopically. These clusters are not well defined and are not obvious objects. One of them - Roslund 4 - is located in Vulpecula constellation and is surrounded with two reflection nebulae: IC4954 and 4955. This complex is placed about 6500 light years away, and the cluster age is estimated to 4 million years. Scientists claim that it is a star formation region, though the amount of stars being born there is low. 10,14.10.2018, Meade ACF 10" f/10, AP CCDT67, EQ6, QHY163M, LRGB 160:40:30:40 x 60 sec, gain=100, suburban sky. Seeing moderate, transparency good. Thanks for watching. Happy New Year and only clear skies in 2019!
  16. 5 points
    The brewery is slightly larger than the observatory, but it does need room for three 100 litre stainless pots that I have made into a hot liquor tun, mash tun and boiler, as well as a temperature-controlled fermentation cabinet with sufficient space to ferment 100 litres at a time. It also contains a sink, space for a worktop, storage for bottles and for malt, which I generally buy in 25kg sacks. This is before it was finished, but gives a general idea: Mostly I brew beer, but have occasionally attempted lager (which I find tricky to do properly) and also press apples from the orchard to make cider or apple juice (so I also need storage space for the apple crusher and press). James
  17. 5 points
    They do look cool,, you have to love the Chinese use of the English language in the description, the image of the elderly breastfeeding it gives you is just wrong..
  18. 4 points
    Hi guys, My name is Florent. I live 80km (40miles) south of Paris in a small village in the country. After several years, since september 2016, my village turns off the light at 11:00pm until 5:00am. I began astronomy in 1980 at 10 years old with a small beginner refractor. In 1996, i began the CCD imaging with one Meade 8" LX50 and one SBIG ST-7E. I used one SBIG ST-10XME from 2003 until summer 2015. Now, i use one Moravian G4-16000 CCD camera with my TeleVue NP101is modified refractor for large fields and my ASA 12" f/3.62 carbon Newtonian reflector. For the mount, i use one Losmandy HGM TITAN Gemini 2 Goto mount, but i have a project to keep the Losmandy pier tripod and to change my TITAN head by one AP 1100GTO head. After more one year of modifications with a partner on my TeleVue NP101is, i began the images during the Spring 2018. I will post them in the Imaging Deep Sky section. Florent ?
  19. 4 points
    4 hours worth of 5 minute frames Ieq45 Pro Edgehd 800 0.7 reducer Celestron OAG with 174mini QHY163C @-15C Proceed in APP and Photoshop IDAS D1 filter 2.5 hours worth of 5 minute frames Ieq45 Pro Edgehd 800 0.7 reducer Celestron OAG with 174mini QHY163C @-15C Proceed in APP and Photoshop IDAS D1 filter
  20. 4 points
    Took this Christmas eve and been messing about trying to make something out of it ever since, lost a few frames at the beginning to clouds. 180 odd frames 10"SCT, Atik 314L Dave
  21. 4 points
    I combined all my CCD data (mixture of lum and red) with 1 hour of Canon 40d data I found on the laptop. Here is the result, about 8.75 hours of data. The colour mottling from the colour data is a bit distracting but I'm out of ideas, probably just a pure lack of data.
  22. 4 points
    As promised, my first post re unpacking and setting up my new LX850 onto the pier. The LX850 arrives in 7 boxes of varying sizes and weights. The two heaviest and largest are the mount and the 12” OTA. All are carefully packed and I was please to see as I unpacked there appeared to be no damage to any of the contents. My LX850 was shipped within the UK via UPS (who also managed to mislay 2 of the 7 boxes), I certainly would have not been able to get all of them in my car. Box 1: 12" ACF f/8 OTA 21kg, 97cm x 59cm x 60cm Box 2: OTA accessory kit 3kg, 32cm x 32cm x 33cm Box 3: Mount Body 30kg, 55cm x 42cm x 79cm Box 4: Mount Accessories 22kg, 76cm x 49cm x 29cm Box 5: Counterweight 14kg, 27cm x 27cm x 14cm Box 6: Counterweight 14kg, 27cm x 27cm x 14cm Box 7: Giant Tripod 24kg, 44cm x 44cm x 102cm My first job was to dismantle the EQ-AZ6 off my pier ready to take the LX850, for that reason I unpacked and then repacked the large mount just to ensure it was in good order. I had also been to my local hardware shop to buy a ½” 13 UNC bolt, locking nut and washer, they would be needed to secure the mount to the pier. Next to unpack was the mount box. The mount head comes is two main parts, the Dec part and the RA assemblies along with the instructions, hand controller and the control panel. I had previously downloaded the PDF version of the handbook to gen up on ahead of receiving the real thing. You would have thought that considering the price tag on the mount the handbook would have been something better than very poorly printed pages off a photo copier. The images are poor to useless, so just as well I had the PDF to refer to. There was also a second document that shed a little more light on the assembly. IMO sorely needed as Meade does not seem to employ literate technical writers. It too was a poor photocopy. The main part of the mount has carry handles which does make lifting this heavy lump into place easier. Correct size imperial sized hex wrenches are supplied plus a spanner that looks a bit like a glorified bottle opener…it is much more useful than that as I was to find out The RA head then has to be attached, that is followed by running the cables supplied for the RA drive and the Starlock OTA though the dedicated raceways. This is a good idea as it prevented cables from twisting and dangling around when the whole assembly is built and in use. The whole assembly is incredibly solidly built and oozes quality. I then used a digital inclinometer and a compass to roughly set Polar North and Latitude. It was then that the bottle opener spanner came into play...much needed when you have a heavy mass to alter the declination on Next was the attachment of the very large mounting plate and the mass bar with its two 14Kg masses. As I am using the Starlock Finder on top of the OTA I did not need to add the extra counterweight provided for the plate to offset the extra sideways mass if the Starlock finder is used in that position. For the next part I was lucky enough to have a friend turn up who could help me lift the OTA onto the mount. At 21Kg and very bulky IMO two are needed into order not to drop the OTA or getting a hernia. I also notice that though a power supply was included the none of the power leads included were of a 3 Pin UK type…another minus point to Meade. I am now waiting for some clear skies so I can do a proper polar align and set up.
  23. 4 points
    A new to me, though actually of 1990s vintage and still working perfectly, Manfrotto 058 tripod for my SolarQuest mount and Lunt LS60. Love the way that this model has a lever to release all three legs at once, which makes levelling a whole lot easier.
  24. 4 points
    Not postman but DHL courier. 8Kg reel of filament for my Giant printer.
  25. 3 points
    After a ton of deliberation I finally ended up ordering the PST this week (was going back and forth between the Lunt 50 and the PST but the PST was just so much more affordable thanks to an Amazon deal). The delivery guy pulled up to the house and I scrambled outside to take possession of the new scope. Not sure why I was in such a rush though -- it has been pouring rain all day and the forecast is more rain for the next four days! Even in California we have the curse of the clouds! In any event, I carefully opened the package and was immediately amazed at how small the PST is. The unit is incredibly well packaged -- the foam casing in the cardboard box is as snug as I have seen and the scope is very well protected. I will definitely keep the box for storage. After peeling (took some muscle!) the PST out of the foam I was next struck by how solid the scope feels. However, it was a little shocking to see that the EyePiece screw really is just a very cheap piece of plastic...I'm hoping this screw doesn't cause any issues down the road! Next, the instruction manual is simple but has some nice general information about solar observing and covers the basics of how to use the scope. The manual also has a nice introduction about the history of Coronado and why Meade purchased them. However, Meade clearly cut some corners by including instructions for all of their solar scopes in the same instruction manual. It reads a little funny in places. I also ordered the Coronado AZS mount and dovetail -- both of those items are expected to arrive on Tuesday. Hopefully by Wednesday I will have some views of the sun! My plan is to keep this thread updated with impressions, first light, final review, photos, etc. Hopefully this will be helpful to the next person looking to pick up the PST. More soon and initial pics below!
  26. 3 points
    Image above or left before, below or right after the new techniques.
  27. 3 points
    The sky here has been on and off, meaning that it is sometiems clear when I take the last walk with my dog Balder, when it is supposed to be cloudy, and other nights I am set up and ready and everything is ruined by clouds. So, I have entertained myself with public data including this 0.4 hour image (4 x 4 subs of about 80 seconds of R, G, B and Ha) from the Liverpool Telecscope - a 2 metre RC scope on a mountain top on La Palma in the Canary Islands. I wish there had been more data but with a scope this size and a very very nice CCD camera it is still quite presentable.
  28. 3 points
    Here is my first proper effort at M42. taken on my Sony a6300 prime focus mated to my Skywatcher 150P Newtonian on a driven EQ3/2. ISO 800 15 second exposure at 23:43 30/11/2018. Far from perfect but I'm learning. I have others but the detail and colour in this image are the best in my opinion.
  29. 3 points
    I'm new to astronomy, I got my first telescope in November (StarMax 90mm f/13), I was really happy with the view of the moon and double stars, but disappointed I could see but barely make out nebula (initially the ring nebula). I also tried to take a photo of the moon with my phone but trying to get a stable shot was too difficult, even with a basic smartphone adapter. I did a bit of research, found about about Video Astronomy/Electronically Assisted Astronomy (EAA) and decided I needed a better mount and took the opportunity to get a faster telescope (StarTravel 102 f5/). I really like the Sky-Watcher -102 AZ GTe with the ZWO ASI 224MC. I've only used it for 4 nights as there is so much cloud about but it's allowed me to take images of things my eyeball wouldn't see. Although my setup is below the minimum specification most would consider for imaging and entry level for visual observations I think I've found a setup that seems to work for me. I like that with SharpCap I can get instant results and the day after when it's back to cloudy I can get a bit more out of the images with Deep Sky Stacker and Gimp. I have tried looking through the eyepiece at the Pleiades, that was a pleasure as well. I can see how observing with a big Dobsonian and amazing eyepieces would be great, but many objects seem better with a camera than eyeballs. The Horsehead nebula wasn't found until astrophotography came into being. The photo above was taken on my first night with the setup. The January 2019 issue of Sky at Night Magazine has a review of the Sky-Watcher StarTravel-102 AZ GTe and they give it 4.5 / 5. Combining it with an Explore Scientific UHC filter seems to reduce most of the chromatic aberration and increases contrast relative to the stars, and light pollution. Video Astronomy/EAA seems to offer a great window into both the visual and imaging worlds of astronomy. As First Light Optics say "Your first telescope is arguably the most important because if the views do not amaze and delight, your interest in astronomy will crash and burn on the runway!" I understand cost could be an issue, but if the beginner had a suitable camera Video Astronomy could be as accessible as a Go-To visual setup, and seems more likely to amaze (especially in the skies of a typical house). My question is why is video astronomy not the first suggestion for beginners interested in both visual and imaging?
  30. 3 points
    Oh golly! How i wish you all could have been with me last night! It had been a warm summer day, clear and calm, and I was a bit concerned the seeing might be a bit wobbly, but as the twilight darkened and the first bright stars started appearing I could already tell there was no twinkling at all. Sure enough, as the sky filled with more and more stars they were all rock steady, even Sirius. With gems like Orion, the Pleiades and Hyades coming into my view for the first time since getting my SW 12 inch Dob I was so excited to have the chance to put it through its paces in conditions better than I've ever had before. I started with the Baader 8-24 zoom as I usually do and went straight to the Pleiades at 24mm. Sparkling white diamonds against utter blackness, with their faint nebulous gas clouds clearly there, but alas only half of them, I really do need a much wider angle EP for such a target, but that's for another topic. Orion was now appearing above the trees to my northeast and the Great Nebula was quite a sight just with naked eyes! I swung the Dob up and over to The Hunter and WOW! No filter needed, the gas cloud was there, bright and clear. Even at 24mm I could easily see A,B,C,and D of the Trapezum in the centre. I knew from many reports on SGL that the E and F stars were a challenge so in I zoomed up to the 8mm max of the Baader (187x). Really? Elusive? E and F were so easily visible I wondered what all the fuss was about! This was the confirmation I needed that I was experiencing remarkable seeing tonight. I decided to put on my Astronomik UHC filter to see what difference it made, but apart from slight hints of colour I felt I really preferred the brighter, sharper image without. Okay, if the seeing is this good I thought to myself, let's try another stiff challenge - Sirius B. Over to the Dog Star now also up above the tree tops and zoom up to 8mm again. Oooh, too bright! Like someone shining a torch in my eyes, I felt I needed a moon filter to dim it a bit. Anyway, I found by squinting a bit and with a bit of averted viewing I could tone down its brightness enough to enable me to see it more easily, and there it was, fractionally above at about 11 o'clock - Sirius B. I checked with my SkySafari app on my phone which confirmed it. Amazing! I must have spent about an hour switching between all the above mentioned targets (whilst applying liberal amounts of mozzie repellant, as they were out in force tonight!). By now some of the jewels in the lower southern sky were beginning to come into view above the trees, some of which I had not seen before. The Large Magellanic Cloud, was now clearly visible by eye as a large roundish grey smudge,so I spent some time investigating its goodies, the Tarantula Nebula being the standout. A spooky thing and aptly named with its many arms sprawling out from its centre. I tried it with the UHC filter which showed a bit more colour, but again I preferred the brighter, sharper view without, the seeing was so astonishingly good I was seeing things that should normally need a filter! I did a quick shift over to the east of the LMC to have a look at 47 Tucana, an old friend I'd seen many times before, but such a great sight. The second biggest, brightest globular cluster in the sky after Omega Centauri, I actuallly prefer it, it has a brighter core and its outer stars seem more distinct, Omega Centauri if anything has just too many stars to take in I find. Early hours of the morning now and just as I was thinking of going to bed, lo and behold, what is that glowing in the southeast just clearing the trees? Yes, the Carina Nebula! I've never been able to see it because of those trees, and here it comes! Had to shift the Dob over to the far side of the lawn to see it above the trees, but oh boy what a gorgeous thing! So much to see, so much going on I felt I would need to stay up all night to take it all in. Swirls and whirls, globular clusters and inky black clouds, it really is Orion Nebula on steroids! I knew this was the best viewing I was ever going to have from my own back yard, it was just extraordinary, as if there was no atmosphere at all to get in the way. I really felt reluctant to leave but my eyes were exhausted and so was I. I finally just stepped back from the scope and looked up, and took it all in, it was a warm summer night, but it gave me shivers just just to see it all so clear and so bright. Sorry to ramble on so long, hope some of you got through it all, it was just the best. ?
  31. 3 points
    Then the idle so-and-sos should man up and do a mosaic! ?lly
  32. 3 points
    I have tried looking and can't find a commercial database for storing my acquisitions and planned targets, I currently use a multi tabbed Excel Spreadsheet, but hate the scrolling and format layouts. Now I'm sure that many well versed people on here could do far better than me, but over the Christmas period I sat down and created an Access database, it's nothing special but seems to suit my needs, I'm not brilliant at this but if anyone wants a copy of the blank database then would be happy to let you have a copy. I wanted to create a database where I didn't have to scroll all over the place and would fit on my laptop screens as well when out in the field. If anybody wants to add anything to the database then feel free and share on here so others can see. As I say, it's just a very simple database that you might find useful.
  33. 3 points
    I don't want to knock @Rodd off the title ? so this will be my last reprocessing attempt at this until I get another few hours luminance. I've attempted to improve the colour of the galaxies, sharpened things up a bit with masks, and even out the background. If you don't zoom in too much and sort of squint a bit, it doesn't look half bad. Best wishes CS Adam.
  34. 3 points
    If "nothing much" is the difference between finding an object or not, then "nothing much" will do very nicely!
  35. 3 points
    No, a rare sign of sanity by SGL standards! Olly
  36. 3 points
    The largest galaxy in the image on the right is NGC 2207 and the smallest on the left is IC 2163. Strong tidal forces of IC 2163 have distorted the shape by throwing the stars and gas into long ribbons stretching out one hundred thousand light years towards the right edge of the image. NGC 2207 and IC 2163 are a pair of spiral galaxies interacting about 80 million light-years away in the constellation Canis Major. Both galaxies were discovered by John Herschel in 1835. SKW Quattro+Risingcam IMX224 15x18" +Dark field correct.+Risingtech software
  37. 3 points
    Its basically been continuously cloudy since I got my new 16 inch skyvision dob last month. But tonight there was some breaks in the cloud this evening and I was determined to test out the dob. The skies were pretty horrible and dewy and light polluted but I managed to setup, collimate, use a coma corrector, align the nexus dsc and servocat and control the scope via sky safari with WiFi. So quite a successful night from the perspective of getting to know the scope and I should be much quicker at setup next time. I was shocked how bad the star shapes were when I first looked through the scope given that I had carefully collimated it. However this was due to the scope not being cooled down. After around 30 mins with the fans running continuously they looked much better. I was also very pleased that the fans and the secondary heater meant that the mirrors didn’t dew up despite the conditions and the scope being outside for around 4 hours (most of which was cloudy!) I even managed to take some (not very good) phone photos through the night vision monoculars in my dob. Pics attached of rosette, horsehead, flame and crab nebulae. It was actually the first decent look I’ve had at the crab since it’s a smallish object which I’ve struggled to get suitable image scale on with NV. The crab is an object that I was excited about as a child so it’s great to be able to see it reasonably well at last. Looking forward to getting this beastie out under much darker skies.
  38. 3 points
    I went out spotting Quadrantid meteors last night with my local observing group and we saw 21 in a two hour session. Sky conditions were very variable, from wonderful clear to thick cloud! Shame we didn't stay up until 03:14 though - here's a huge fireball caught by the all sky camera outside my observatory:
  39. 3 points
    The 18mm and 25mm do quite well in my f/12 127mm Mak. In my f/6 Dob and ED refractor, not so much. If you want much better correction at those focal lengths and have the budget for them, there's the 18mm and 24mm APM UFF eyepieces. Going further upscale, there's the 17.5mm Baader Morpheus. If you've got a 2" focuser and $500, the 17mm ES-92 is pretty sweet and shows slightly more TFOV field than a 32mm Plossl but at about twice the power with no aberrations. I was enjoying sweeping the region around the Double Cluster in my AT72ED last night with it just seeing what large open clusters I had been missing with my longer focal length scopes. It was amazing. ? At 17mm, I've also got the Nagler T4 and AstroTech AF70. The Nagler is obviously quite good, but I much prefer the ES-92. The AF70 is the same as the older Celestron Ultima LX and newer SkyWatcher SWA 70, Olivon 70, Omegon Redline, TS Expanse, and Tecnosky Superwide HD. It has some astigmatism and chromatism at 20% to the edge, but is otherwise quite good. If you can find one for under $70, they're a good deal used or on closeout. The Redline/AF70 style also has the best 1.25"/2" conversion method of any eyepiece I've ever used. The 2" skirt just screws off completely and the 1.25" barrel is then usable at basically the same focal position. Agreed. I have the 9mm Morpheus, 9mm Vixen LV, and 9mm HD-60 (and 10mm Delos), and the HD-60 easily holds its own against the more expensive competition: That 17mm to 24mm range is a tough one to fill on a budget and still be usable with eyeglasses. If 50 degrees is acceptable, try hunting down used 20mm or 25mm Vixen LV eyepieces for $60 or less. Unfortunately, those are the most difficult to find eyepieces of that line on the used market.
  40. 3 points
    First time pairing atik infinity with hyperstar - c11, camera doesn't block all that much aperture. Was still expecting to see some funky images due to camera is big rectangle with 2 cords coming off vs one cord on asi camera which is small and round, takes up no aperture. I don't see anything too funky, I think? Waiting for galaxies to rise East, started with usual Orion, flame & horsehead. Pleased with 20 sec subs, images below 40 frame stacks. Not quite clear as mono but nice seeing color while touring. Next a visit to casper the friendly ghost, wasn't much detail as was hoping for so slewed to cigar galaxy. Darker portion of sky for me, cigar viewing was good. 46P was near by so slewed on over, still green and looking good. A quick stack of 5 images, 5 sec each I think. Left comet to view open clusters, did a stack of the shoe buckle. Slewed to hamburger galaxy and friends was looking good but fog creeping in so ran to whale galaxy hoping to get captures. Even with slight fog was stacking well until thick stuff rolled in. Was hoping for black eye galaxy and others tonight, will have to keep waiting. Images stretched in nebulocity, Clear skies !
  41. 2 points
    I’ve seen something similar under my bathroom basin for moving the plug up and down.
  42. 2 points
    Anyhow, to return to the observatory build... Today I started on cladding the other side of the roof. Being on the lower side of the slope this involved far more time going up and down ladders, but having done most of the hard work yesterday meant it went pretty well. There's a narrow strip at the top that I still need to do, but my intention is to use that to trap the EPDM where it folds back under the roof so I can't actually finish that bit until the EPDM is glued down, which is probably going to have to wait until the spring when the weather is sufficiently warm to use the adhesive. Such is life. I knew little things like this would come up when I failed to get it finished a couple of months back. I also took the end flap off and fitted the cladding to that, including a strip of EPDM that I can use to cover the gap between it and the top of the southern wall so rain can't be driven through the gap. The lengths of cladding I used must still contain a lot of moisture as after fitting about 12m of cladding I really struggled to lift the flap back into place despite easily carrying it one-handed before the cladding was fixed. As a result I couldn't get it into position quite properly, but it's close enough and clamped into place again, so I'll leave it to dry out for a few days and then have another fiddle with it then. Unless the blue tits continue to attack the remaining exposed membrane on the gables I think I shall try to get the inside moving forward a bit more now. James
  43. 2 points
    This is the B&W version taken with the Astrodon Square 50x50 Ha 5nm filter : Full Resolution image in 4k x 4k here : http://www.poigetdigitalpics.com/G4-16000/sh2-171HAlpha.htm
  44. 2 points
    Canon 6D does'nt need modifying imo. Have done 30sec exposures with mine that show plenty of Ha. Here is mine at 7 x 30secs.
  45. 2 points
    I do miss my 4 inch F5 Genesis for precisely this reason. I could have an enormous FOV for such delights as the entire Veil, the Double Cluster with Stock 2, the Rosette etc. Olly
  46. 2 points
    Hi Florent, Welcome to SGL. ? How I wish more places would turn the lights out deep into the night. Steve
  47. 2 points
  48. 2 points
    I used to quite like them for breakfast when camping.? Sorry mis-read the thread.
  49. 2 points
    My late (and only) attempt at P46, it's now fading and not that exciting but last night was my first opportunity to imaging it. Canon 60D with f2.8 135mm, 3 x 3min subs.
  50. 2 points
    No neck-strap on this guy....How about a pair of 16x80mm Parks binocs mounted on a homemade GOTO binochair with a 40K object database powered by Nexstar 4SE servomotors/electronics/software? Pick the celestial object you want to observe on the Celestron controller, press "Enter" and the chair will take you there with it centered in the big Parks 16x80's field of view in less than 30 seconds powered by two big Nexstar 4SE servomotors on each axis via a steel cable (wrapping/unwrapping) on a steel drum in Altitude drive (last pic) and a big gear in the Azimuth drive. It's one-of-a-kind. Sometimes on occasion...I attach my C-8 with a binoviewer too for a different GOTO observing experience.... P.S. The story of the GOTO binochair design and construction appeared in Sky & Telescope and Astronomy Technology Today during the same July monthly issue in 2012...a first! Klitwo
  • Newsletter

    Want to keep up to date with all our latest news and information?
    Sign Up
×
×
  • Create New...

Important Information

By using this site, you agree to our Terms of Use.