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Showing content with the highest reputation on 18/03/21 in all areas

  1. This was another test image from last night that's come out better than I expected. Its just 114 one minute exposures taken with 250PDS and 1600MM. 2x binning.
    22 points
  2. Hazy sky last night so I setup the 250pds ready for when we eventually get a clear night. Amazingly skies must have cleared at some point as it managed 88 mins of data. SkyWatcher 250-PDS with 1600MM Pro - in just 1 and a half hours from Bortle 5. https://www.astrobin.com/i49p9i/0/
    19 points
  3. The Integrated Flux Nebula (IFN) in this particular area of Ursa Major not far from M81 and M82 is rarely imaged. NGC2976 up in the left corner of this image is that small galaxy often caught together with M81 and M82 so those more iconic galaxies are lurking just a bit above this image. With the RASA I found the IFN to be quite colourful with both grayish and reddish reflecting dust. It is generally throught that these clouds are on the outer edges of our galaxy and, unlike "ordinary" reflection nebulae, are reflecting the light of the whole galaxy, and are thereby very faint and usually not
    14 points
  4. On the 14th of this month I went for a Spiral galaxy not often imaged NGC 3631 in Ursa Major and got Luminance of 8 x 300 and 10 x 600 and RGB of 5 x 300 each all binned 2 x 2 . I checked this one out and it said there was some Ha in the spiral arms so on the 16th I got Ha of 5 x 600 and 9 x 900 binned 2 x 2. I used my Celestron 11" scope at F 6.3 and my QHY9m camera. I have included both the LRGB and the HaLRGB images. Bob
    12 points
  5. I thought I would give a few doubles in and around the Beehive (M44) a go last night. There is so much going on, I needed a printout to guide my way and I ended up adding notes and basic sketches on that. I was pleased with the result even though I guess many/most are visual rather than actual binaries? As you can see, I am not sure about SLE337 and so have marked two candidates which were next to one another. I may have to check Stellarium again. It took most of the observing session but I did manage to catch Iota Cancri (5* Y+B) and I am pretty certain I got Struve 1266 (3* Y+
    10 points
  6. Well.... the lovely phases are here... and so still are the clouds. I DID manage a clip yesterday about 1 hour before sunset. Transparency horrible... but seeing good. Once I finally found it, it was tricky to get focus, but I think I got it pretty good. As my first image taken with my APM 140... I must say, this bodes well for future efforts. This is my first daylight capture I have shared at full size. Some decent details in there! Hope I don't have to wait too long for a night time window so I can put some power on there. Going stir crazy waiting. Make sure to
    10 points
  7. Just arrived (very quickly thank you) from @mikeDnight and in superb condition A Masuyama 16mm 85 degree... this is specifically for the StellaLyra 6” f/12 CC and possibly the StellaMira 80mm f/10, as it’s not purported to work too well at lower f ratios. However, it is super small and light for what it should provide and “may” replace the Panoptic 15mm in the “small” set
    9 points
  8. AKA The herring and the Hockey-stick!! A disappointing night last night with high haze really knocking things back - I think thats why I've got so little of the "tidal tail" of the crowbar. But never mind, It was a clear enough sky to get an image. This is around 4 hrs of 180s subs with the Evostar 80ED and the ASI2600mc C&C Appreciated.
    9 points
  9. 8 points
  10. Last evening was unexpectedly clear and I had a nice session of low magnification views of the Moon and some double stars before 8pm. Eventually I decided to go even wider as the transparency seemed good and so I grabbed my 20x80 for DSO observing. I was lucky that the clouds held off and I spent a pleasant hour scanning the sky and looking at some old favourites: the double cluster, the three Auriga clusters, the Beehive. The Pleiades looked good very low in the west. M42 was showing quite a lot of nebulosity in the bins. I even spotted M72 as a faint smudge on the continuation of t
    7 points
  11. Inspired but the recent StarGazing episode, I thought I'd try my hand at some lunar sketches. I must stress that these are based on photographs in a moon atlas. Next step will be to try some at the eyepiece Kerry
    7 points
  12. So this is only 3 hours of Ha mono data. While keeping my fingers tightly crossed to get some OIII and SII data before the end of the season, I thought I would create what I would like to finally create with full SHO data while I'm waiting. It has been created from coloured layers of the Ha data entirely in Photoshop. I'm hoping when Ive finally got the full SHO data that it will turn out as good!
    6 points
  13. Mainly double star observing this evening with my 130mm refractor. Over Leo's hind quarters are a pair of stars which are actually part of Ursa Major. The bears hind paw in fact. Their proper names are Xi Ursae Majoris and Nu Ursae Majoris. Their other names (which I much prefer) are Alula Australis (Xi) and Alula Borealis (Nu). They sound quite exotic ! Here they are: Both these Alulas are double stars but rather different ones through the scope eyepiece. Alula Australis is a splendid magnitude 4 golden-yellow pair with a separation of 2.16 arc seconds (Stella Do
    6 points
  14. Does this feature have a name ?? Had the Edge 8HD set up for galaxies, but narrow-band filters in the filter wheel..... oh well, lets zoom in on the Rosette nebula. Our Feline Feature is just to the side of NGC2239 (the lovely cluster of stars in the centre of the Rosette). Celestron 8HD - Atik 414 - Hubble Palette - Ha (110mins) O3 (50mins) S2 ( 25mins) There is a whole line of interesting shapes to be found here. Sean.
    6 points
  15. Here is 2 hrs of O3 added to the 2 hrs Ha as HOO. O3 was 600s exposures but still didn't pick up much. Also the stars in all the O3 frames were all rugby ball shaped across the whole frames. Not sure why as the guiding was well under half the imaging scale throughout.
    6 points
  16. Thanks to everyone who has posted in this thread so far, as it has all been very helpful in putting together my rig. I thought it might be helpful to others to share some of my (limited) experience so far, and to ask for comments on whether the performance of my 135 is in keeping with what one might typically expect. First a few words on the rig: - I opted for a Redcat 51 mounting ring as suggested by many others. This seems to hold the lens nice and snug and my preliminary assessment is that it is a good choice. - The Astro Essentials M48 replacement plate was easy to install a
    6 points
  17. It's likely nothing that Marvin with his grease gun couldn't solve!
    6 points
  18. Cheese Plate, not to be confused with Cheese cake...
    6 points
  19. Well, technically it’s not my equipment. We gave this SW 150 dob to our younger daughter for her 8th birthday. She’s now a hospital Dr and we’ve not seen her since Christmas, so thought it would be nice to get it out to reminisce. I never cease to be amazed at how good this instrument is.
    6 points
  20. I observed from 6.15pm to 7.40pm using my Tecnosky 102ED F7, and binoviewer with x2 barlow and 24mm and 16.8mm Orthos. The seeing was very good at times. The terminator showed fine detail along most of its length. In the south I watched the sun rising over Janssen and Valleris Rheita. Fine detail was also visible in Palus Somni to the W of M Crisium, and in Lacus Bonitatis adjacent to the NW of Crisium. Further N the terminator was showing incredibly fine detail as it passed Atlas, of which only the rim was illuminated, and passed by Endymion and de la Rue heading towards the N cu
    5 points
  21. Cloud attracting box arrived from FLO today with WO EQ wedge for my recent AZGTi acquisition - did not realise how small the weights bar was in real life (around 4 1/2" or 120mm in new money). Aslo the bottom part that stops weights sliding off is not a screw, I was hoping that would fit the existing bar/weights I have that uses a screw. Must rummage through the garage for a knurled edge screw gizmo that fits. It's so cute that it sort of begs for some nice stainless steel weights - but needs a reducer to fit the AZGTi and possibly an extension! Hopefully the small clou
    5 points
  22. The Lobster Claw Swimming in to my telescopes view during clear spells in the first few weeks of 2021. Some cold nights with large accumulations of snow on the hillside added shoveling to the set up routine, the temperature getting down to a respectable minus 14. Aswell as the main object catalogued as Sharpless 157, a pretty open star cluster can be seen in at the lower right claw ( NGC 1750) with Lyn's bright nebula seen up at centre left. This huge space crustacean in Cassiopeia is 11050 light years away and was captured over 4 nights. 19 hours in Sulpher, Hydrogen and Oxygen
    5 points
  23. Hi everyone With our OAG on loan, we resorted to an old 60mm guide telescope and remembered to fit the ir filter in the equally ancient asi120. The sky would have easily supported 10 minute frames last night but due to the hardware limitation, along with reading too much about the impossibility of using separate telescopes to guide anything longer than a 50mm camera lens, we decided upon half that. Anyway, once again, the little guide telescope did it's modest job well. No shortage of galaxies in the frame and even managed a bit of blue in one of the stars. Thanks for looking and do
    5 points
  24. Some prints! I'm proud of all of my images because of the huge effort to get to where I am but it's taken until going into my 3rd year of astrophotography to finally like one of my images enough to put it in a frame! You can really see either how good or bad your processing is with prints as well!
    5 points
  25. I had a nice evening last night with a few open clusters and a double. M47 to the East of Sirius was easy to find and combined brighter and faint stars. The central region reminded me of a number 5 dice. 4* I headed North and found the fainter open cluster NGC 2423 3* Back to M47 and then East to M46. Rather mysterious in that the longer I looked the more I saw. It was almost as though I was looking at an animation with "mist" rising out of the centre of the EP 5* I then headed over to the Beehive (M44) which was as excellent 5* as ever before concluding with Tegmine whic
    4 points
  26. This evening I took some photos of the moon with my 90mm refractor and Canon EOS750D. The first one is at prime focus and the second two are with an eyepiece projection attachment (Plossl 9.7mm). I found it very difficult to focus using the back screen on the camera in 'live view' mode as the wobble on the mount was quite bad whenever I adjusted the focusing knob. So my hand was causing so much motion that I couldn't really tell if it was in focus until I'd made each adjustment and waited for the oscillations to die down. I had the same problem with the shutter release (so I used a 10sec
    4 points
  27. I found choosing a first telescope – particularly during lockdown when you can't see or touch anything – a real challenge, but I think I found a good one in the end ... so I wanted to offer my thoughts on the ST80 with AZ3 mount in case it's helpful for someone else considering this telescope. I was looking for: -a very portable telescope to take to the park, as my garden has restricted viewing -a wide field of view (FOV), to help me find objects while I'm learning the sky -visual only – no photography necessary right now -cheap, so I could see if I actually enjoyed looking at the
    4 points
  28. I don't know why I didn't do this before - I have never bothered with flats often and when I have it has been with a T shirt over the scope during the day and I usually end up moving it and generally doing a rubbish job. Today I took delivery of a 40x40cm 36W LED panel (eBay 124209366763) and attached it to the observatory. I managed to make the scope pirouette to it with the roof in place and stored that as an unpark position in EQMod and tested it tonight - perfect. I shoudl have done this long ago! £11 and 10 minutes is all it took
    4 points
  29. Finally got my dew controller today from FLO. I’ve been helping to keep FLO afloat this year to such an extent that when the postman comes my Mrs says “It’s clouding over again” or “I think some more clouds are being delivered” without seeing what’s come
    4 points
  30. Did a little experimenting last night with 2hrs worth of shorter (300s) binned Ha exposures to avoid horizontal blooming on the 8300 sensor. Seems to have worked quite well with only a smidge of the blooming visible on the brightest star which disappears upon stretching. Definitely not getting as deep as id like though, compared with the 1200s used previously. Quick calibration and stack in APT, then levels stretch and noise reduction in gimp and exported as jpg. Slight tweak of brightness on phone using ps xpress as it appeared very dark on mobile device compared to monitor.
    4 points
  31. I Autostakker3 for stacking and ImPPG for sharpening. I use a Lunt 60mm DS but a Zwo ASI 178mm mono camera.
    4 points
  32. Good evening I have been working on this image for over a month in between other targets and therefore it represents the longest project that I have attempted to date. I came up against significant gradients and so it was a battle to get it to where I have finished, but unfortunately the colours are not entirely flat. I will probably end up having an another attempt in which I manually flatten each of the RGB channels but that being said I am still pleased with this attempt. It was captured using an Meade 6000 80mm APO with 0.80x reducer, ZWO ASI 1600MM Pro, HEQ5 (belt mod
    4 points
  33. Quick snap from last night, a few 30 second exposures with the 135mm Samyang stitched together in ICE. Also had a quick go at shooting Auriga and its star clusters, but need to shoot another pane next time.
    3 points
  34. Just found this on the web, very interesting. I find the level of detail revealed here renders the Milky Way completely unrecognizable. Love the photo at the bottom of the article of his observatory! It took over a decade and 1,000 hours of photography to create this picture of the Milky Way | BusinessInsider India
    3 points
  35. A little over a year ago, on the day I turned 58, I saw that a scope I had been watching on the Dutch te-les-koop.nl website had dropped in price to a mere EUR 165. I decided to treat myself to an extra OTA, because having just one Cat (the venerable C8, of 25 years of age) didn't feel right . The black cat needed company. More seriously, a 6" F/5 scope, with its 762 mm focal length, relatively fast optics, and little coma would sit nicely between the 8" F/10 C8 at 2030mm focal length, and the APM 80 mm F/6 triplet at 480mm (or 384 mm with 0.8x reducer). The C8 is my best planetary imaging sc
    3 points
  36. An interesting design, the Schmidt-Newtonian, a bit of a "Cinderella" instrument. I made, possibly the earliest SN in the early 1970's, I had been making some 8" F20 Schmidt-Cassegrains with optics by James Muirden and Jim thought it worth trying a Schmidt-Newtonian. We made a 4.25" F4 and gave/sold (?) it to noted UK amateur Colin Henshaw who used it mainly overseas. I seem to remember an 8" and 12" version.
    3 points
  37. Geometry. The curvature of the field is indirectly related to the focal length of the scope, and can be calculated at different distance from the center axis. The difficulty with refractors is the Radius Of Curvature, ROC, is about 1/3 of the focal length, whereas with a newtonian, the ROC is equal to the focal length. That means field curvature issues are more present in refractors, and definitely explains the use of field flatteners for imaging, and even for visual use if the refractor is short. That applies to doublet lenses. Quite often, in some triplet designs, some f
    3 points
  38. I managed to get some more data on the Rosette last night and combined it with some from a couple of weeks ago. This has given about 3 hour 20 mins of data in total. Scope: SW Evostar 100ED Pro with 0.85 reducer/flattener. Camera: ZWO ASI294MC Pro cooled to -10°C and run through APT then DSS. Image processed in PixInsight using the my normal processing to give the first image and then I tried out the method @Luke Newbould posted earlier this week to the get the Hubble Palette version from a OSC. This is my best of the Rosette to date and I do like the contrast the Hubble Pa
    3 points
  39. A balmy seven degrees C soon dropped bringing dew and some cloud cover. Just a short couple of hours, seeing wasn't the best. Started off with a view of M94 that bright glow in Canes Venatici. M51 showed two cores , not bad from here. Also spotted a brighter M63 "sunflower ". M3 looked lovely , just a sparkling view at x100. Caught "La Superba" (SAO 44317) , much duller than last look , but a beautiful glowing coal. Leo gave hardly a glimpse of galaxies, but OΣ215 did split open at around 1.4". I tried out Tegmine , really a challenge this time to get the triple. 90 Leonis ( SA
    3 points
  40. After thin cloud spoilt my grab for a daytime moon, I had thought the day was a bust - until the un-forecast clear early evening! My view west is basically my house, so it was a very limited session, racing against the moon's inexorable slide into my ridge tiles. I only managed 1 pass of 1000 frames each LRG and B before the straight line of doom started marching across my screen
    3 points
  41. I fund that a disposable plastic knife, blunt pencil and the fossilized jawbone of a cro-magnon man are best. Well, that's what it looks like I've used whenever I've tried to cut it myself!
    3 points
  42. Hi everyone Apart from the haze, can't think of any decent excuses for this one. Handy targets whilst you're waiting for the galaxies to rise. My gf deems it, 'not as sparkly as I'd like'. Ah well... Thanks for looking and do post if you've had a go at this. 700d on gso 203
    3 points
  43. Image so far of the Orion Nebula, still getting used to using EQ mode on my AZ-GTI. Also first try using Star Tools (just purchased yesterday) Canon 80D ... Sigma 150-600mm @ 400mm .... iso 800 .... f8 75 x 40sec lights 28 darks 18 bias. SkyWatcher AZ-GTI in EQ mode. Bortle sky 6/7 .CC always welcome (I have a lot to learn.)
    3 points
  44. Last night was the first real opportunity for imaging this year, as my set-up has been causing lots of problems. No moon thankfully, and I managed to get 2h15m exposure on Bode and processed in APP. Imaging: Esprit 80; HEQ5 Pro Rowan mod; ASI1600mm Pro @ -20c; NINA Guiding: Altair Astro Starwave 50mm; ASI290mm Mini; PHD2 Exposures: 10x 150s, Baader RGB 12x 300s, Baader 3nm Ha Super-luminance from all channels Processed in APP, Gimp, Starnet++ and Noise Ninja.
    3 points
  45. I managed to get a few hours on the Leo triplet last night - although not as much as I hoped as the cloud came in earlier than planned. An hour each of RGB and about 1.5 hours of luminance. Taken with a GSO RC8 reduced to F6 with and ASI1600MM. The reducer seems to highlight the collimation errors - I'm sure there is a good reason for this. I am planning on collimating soon, when the tools I have ordered arrive from China. The slightly bloated stars are probably down to some very high cloud on some of the subs. A threw out about 30%, but I did not want to loose too much data. Constructive
    3 points
  46. Here's the same image, but I've spent 45 seconds increasing contrast etc on an iPhone 'post processing'. A much more pleasing, but still very simple single shot image.
    3 points
  47. Ive been wanting to hit this target again since my first attempt in 2019 which was in my first year of astrophotography. Its definitely an improvement and for what is a pretty short integration RGB image, its come out pretty nice. I'm looking forward to adding more data as the year goes on. RGB - 1hr 20mins each channel, 300 sec subs. SW80 ED DS PRO, HEQ5 PRO, QHY9 CCD, Baader RGB filters.
    3 points
  48. best filters on the market. got the h beta as well but cant have until my b day. wait until you see the veil with that. hold your jaw though
    2 points
  49. I didn't quite know which section to put this in, but this will do for starters! Several years ago I bought a Lakeside motor focuser for my RC10. At that time it was sold by Ian King. Nice piece of kit, but I found that using MaximDL to autofocus was tedious and sometimes failed altogether. So I ended up controlling it manually. Then removed it and went back to full manual. But I'd been using a Bahtinov mask for some time, and came across the excellent albeit venerable Bahtinov Grabber free software. I'd downloaded the zip file years ago and forgotten about it. So started using it, fo
    2 points
  50. Really great pictures, all of which could be developed with more exp. time. I'd call this purchase a success! Nice to see a solution which doesn't involve pelting the problem with money... Olly
    2 points
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