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Showing content with the highest reputation since 24/08/20 in all areas

  1. 56 points
    I havent posted for a while its so good to finally get going again..... Ive been wanting to image a wide field of M45 for years.... managed to get tenough over the past 4 weeks now it is rising early in the morning.......total 12hrs comprised of 300s, 180s and 60s exposures. Imaged with a 105mm 1.4 Sigman lens @ f2 with an ASI2600 OSC. Cmos Processed in Pixinsight, Photoshop,and lightroom Thanks for looking Peter
  2. 54 points
    Hi everyone Today I woud like show You my longest expose photo. This is very well known OU4 (Outters4) Gigant Squid Nebula. In polish wheader condition I started cathing it at last week od may and finish few days ago. All frames without moon. It is O3RGB composition. QHY695A, Ioptron Cem60EC, TS APO100Q, Chroma O3 3nm, Chroma RGB. O3 47h @1200s, RGB 3h @300s link to full size https://www.astrobin.com/7wcspr/ edit. Sorry, I forgot Negative and starless version full at Astrobin
  3. 39 points
    Hi all, Last week I've put together some of my data made the last couple of months to compose this bi-colour image of M27. Quite tricky to proces due to the high dynamic range of the object, quite a pain to tease out the faint outer details without making the image look to forced. I started the processing job from scratch a couple of times, but settled with this version for now. The h-alpha data was acquired from my heavily light polluted backyard, the o3 data I acquired during an astro holiday in Southern France (Provence) under pitch black skies late August. Thanks for checking them out. Regards, Pieter Some details of my gear: Scope: 10" f/3.8 homebuilt Astrograph with 3" Wynne corrector CMOS: ASI-1600 MM Cool (-10°C) Filter: Astrodon 5nm h-alpha / Baader 4,5nm o3 Exposure: 24 hours in 5min subframes (15 hrs h-alpha / 9 hours o3) Mount: Mesu200
  4. 38 points
    M16 (or only what fits my sensor). SHO Hubble Palette version Sii 20x600s Ha 21x600s Oiii 23x600s This type of image is something i'm loving to do. Big targets captured with a huge focal lenght. For this image was 2050mm FL. The C11" Edge HD has a great corrected field and no crop is needed. Astrophysics CCDT67 do the job puting telescope in a faster f/7 ratio and no distortion applied. It's not so easy in this FL to run 600s subs in a intermediate mount like AZ-EQ6 with 70% payload reached. I had time to play side by side with the famous Hubble version!
  5. 37 points
    Finally got started for the season and had a few nice nights in mid august. Still fighting some problems with spacing and/or tilt but I think it turned out all right anyway. I have two suspects and don´t quite know how to identify the culprit Either the TS 2" flattener is not that good or I have focuser tilt. I think. The search will continue. Rotating the camera 90 degrees gave deformed stars in the same corners as before rotating... so that might indicate what? The flattener since it rotated with the camera? Anyway, hope you like the image. IC1318, Gamma Cygni Nebula. Ha: 41*5 minutes O3: 86*5 minutes S2: 55*5 minutes ZWO 1600MM-Cool, TS Photoline 80mm f/6 APO. Astrodon 3nm Ha+O3 filters, Baader 8nm S2 filter
  6. 36 points
    The moon is almost gone so I got the colour camera back on the RASA 8. I finally had good seeing last night, probably because it was also rather gusty. So I had guiding around 0.8"/pixel, which is good for my old NEQ6, and ok when I image at 1.94 "/pixel. Also the ASI2600MC must have got attached perfectly since the stars were round all the way to the corners for once. I used no darks (not needed with this low-noise camera) or flats since I have managed to keep the system dustfree so far. This fantasy provoking nebula is very faint so f/2 helped getting most out of a short night. I managed to grab 68 x 4 min, so about 4.5 hours. EDIT: When I see it posted it may be that I should tune down the sky brightness a bit?
  7. 33 points
    Hi everyone! Managed to capture 9hrs Ha and 11hrs Oiii (7nm) on this one. SW 80ED DS-Pro ZWO ASI1600MM Pro SW NEQ6 Pro ZWO ASIAir Pro SiriL StarNet++ Adobe Photoshop CC Thanks for looking!
  8. 32 points
    Some decent seeing last night (predicted nicely by the Windy.com app), although transparency was poor with scudding cloud bands which played havoc with the histogram during capture. 16x 120sec captures derotated to 00:45 UTC. Mare Cimmerium at centre with Sinus Gomer (the finger like dark area) nicely visible. 8.75" Fullerscope on EQ6 Altair 224C with Baader L filter and APM 2.7x barlow and ZWO ADC
  9. 30 points
    Added 2 more hours on my old image, and am very pleased with the result. Hope you enjoy captured over 2 nights from bortle 8 sky Canon eos R sigma 150-600 @400mm Ioptron CEM-40 (unguided) 45 sec ISO 3200 f6.3 25/8/20: 1h17min integration 28/8/20: 1h58 min integration total: 3h16min darks, flats, bias Agra, India bortle class 8 Edited in DSS, photoshop, Lightroom
  10. 28 points
    Elephants trunk nebula. SHO from the Derwent Valley on a new moon. Bortle 5 Processed in PixInsight ZWO 1600 mono SW ed80 Heq5 Baader 48x10 min Ha 30 x 10 Sii 34 x 10 Oiii. 18.5 hours
  11. 27 points
    SH2-115. 8 hours Ha + 4.5 hours each SII & OIII = total 17 hours. (FSQ130 & FLI ML16200) I could have and perhaps should have given this a lot more time......but some things just not coming together for me ast the moment to make that happen.
  12. 27 points
    I decided to reprocess my M100 data from last year. This time, I decided to present the image in a much wider field of view, which has the benefit of highlighting the various background galaxies. The other notable changes are that the blue spiral arms are emphasized more and the overall brightness of the central galaxy has been increased. At just over 12 hours integration time, this was taken with my Esprit 150. Alan The original version is here:
  13. 27 points
    It might be mildly off-topic, but after multiple weeks of work we managed to put up my first large-scale print of a DSO (Eagle nebula in narrowband) as a surprise gift for my mom's 69th birthday. With help from my twin, dad and uncle, transporting the thing was almost more of an adventure than the earlier phases of the process. Doing everything out of sight of my observant mom also proved to be an interesting challenge. Glueing the image to a ~3m x 1.5m slab of pressed wood Resurrecting old comics to keep everything down as the glue dried Transporting the monster out of the workshop Moral support from the neighbour All good, and with inches to spare Setting up on the wall And the final product in its setting Bonus image: my mom's reaction when discovering the addition to the room! Most of the credit goes to my dad, who came up with the idea and organised the logistics, and my twin who took care of most of the things that required actual workmanship!
  14. 26 points
    Hi again Guys Some fairly stable seeing here last night, although I would say that transparency was pretty average tbh. Pleased with this one though no2-13-09-2020@00-10ut.tifno2-13-09-2020@00-10ut.BMPno2-13-09-2020@00-10ut.BMP
  15. 26 points
    This GIF is an animation of 3.5h Jupiter's rotation There were 130 images for this animation, totaling more than 400 GB of videos and a final average of almost 1.8 million frames (~ 13,838/video). At the beginning of the night the seeing was not so good, but it improved considerably over the hours. This may include acclimatizing the telescope and reducing heat dissipation from the ground into the atmosphere .... Many details with good sharpening, including GRS and NEB outbreak. First image: 2020-08-29 22:45h UT Last image: 2020-08-30 02:11h UT Equipment: C11 "+ PM2x + ASI290mc
  16. 26 points
    Omega Centauri My first image here in the lounge! This April was a great month for Astrophotography. My main challenge is moisture in the sky (90% humidity) and of course as I image from a bottle 8 zone, light pollution. At 11 pm everything is most often soaking wet and I normally call it a night. But the weather in April was better and I managed to get a couple of hours of good data every other night. Here is a higher resolution image: https://voelcker.com/omega-centauri My "export to jpg" process definitely needs improvement! Details: Acquisition: 130mm Apo @ f/4.5, ASI1600 mm pro, unity gain, Astrodon RGB, SGP and PHD2 Processing: Astropixelprocessor, Pixinsight, Photoshop Clear skies, Ecki
  17. 26 points
    Just a smooth processing to keep the galaxy real in the field. Not able to take long subs due to the light pollution site, the limit exp time was 120s. A RGB challenge in a bortle 9 location. L 80x120s RGB 20x120s C11" HD reduced with a Astrophysics CCDT67 (f/7.3) + ASI1600mm-c Mount Skywatcher AZ-EQ6 GT Processing in PixInsight.
  18. 25 points
    Yes - the boot's on the other foot now as I said in Simon's thread a few minutes back - Mars scrapes 48° at home but we got the same altitude at Yongala some time after culmination last week... This is the first of a series (hopefully!) of annotated images - we hope to capture the entire Mars' globe's vista in perhaps 4 or 5 images...with a lot of luck & optimism with the seeing we have had this year...but I decided that an annotated disk would be a good thing to do when almost every image one the net that gets into any details is a projection map: I think others besides ourselves would like a reasonably accurate annotated disk image for easy & quick referencing... Some anomalies might be present but I've saved the file as a layered .psd for easy corrections...here's hoping we get the chance to fulfil the exercise this apparition because I want the consistency of this current apparition & not use earlier apparitions' images - the albedo markings etc on Mars changing dramatically from each one. Will probably need clicking on the image to see it at full scale.
  19. 25 points
    Windy conditions here last night Mars was up & down like a ping pong ball this being the best of the bunch! C9 skyris 236M - x1.8 amplification! Image resampled at 140% Thanks for looking.
  20. 25 points
    SH2-112 Description This rather beautiful object lies approximately 5,500 light years away within the constellation of Cygnus about 1.3° west-northwest of the bright star Deneb. The nebula’s emissions are driven by the mag. +9.2 star BD+45 3216 which is approximately 30x brighter than our own Sun and Ha dominates here substantially. There is a dark band of dust to the nebula’s western side orientated north-south. I really struggled to get adequate OIII data for this object in the last month so the 21 subframes used for the OIII portion of this image were captured over 5 tortuous nights of imaging while dodging clouds. However, in the end I captured enough to produce a worthwhile image when combined with the much easier Ha data to produce this bi-colour image. Ha was mapped to the Red channel and OIII was mapped to both the Green and Blue channels. Ha/OIII/OIII version On the subject of Ha, a mono image of this object using just Ha data shows some really lovely detail in the nebula itself as well as in the background sky as shown below. Ha only version Image Stats Mount: Mesu 200 Telescope: Sky-Watcher Esprit 150 Flattener: Sky-Watcher Esprit specific Camera: QSI 683 WSG-8 Filters: Astrodon 3nm Ha, 3nm OIII Subframes: 22 x 1800 sec Ha, 21 x 1800 sec OIII Total Integration: 21.5 hours Control: CCD Commander Capture: MaxIm DL Calibration, Stacking and Deconvolution: PixInsight Post-Processing: PhotoShop PS3 Location Constellation Cygnus RA 20° 34' 38.0" DEC +45° 43' 17.0" Distance ~5500ly
  21. 25 points
    I am not quite sure where I am going with this one . I started gatherering data with intentions of completing this object as a totally NB image. The colours in my mind were nothing like this....but I kept following down a track this morning when processing the data I have so far: Ha 12 hours, SII 7 hours and a total of 3 hours RGB. I am sure there will be a follow up image in due course - I am still trying to get some OIII (not that there is much of it there.....if any?) and I may throw some more RGB into the mix. As is....it is still an interesting image of a very faint nebula
  22. 25 points
    Finally finished processing my first mars this season. Plagued by thin high cloud saw the histogram yoyo-ing etc. But I did manage to get a few decent runs ok. Telescope - Celestron C11 Camera - Asi290mm Filters - Baader RGB
  23. 25 points
    Hi all, so I have been observing the red planet recently through my lovely XT8 from Biggin Hill and was not expecting to see what I did. I figured I'd see a small red disc and MAYBE a hint of polar ice cap. My viewing was very much less than ideal, I had to point my scope under a bright street light...even so, I was blown away. With a BST 8mm and a Baader classic 10mm, the planet was big and the polar cap easily visible,as was surface detail. Absolutely beautiful view, even with far from ideal viewing conditions. To anyone who has not not yet bothered to look at it...do it! Now, it won't be this close again for a very long time. Sorry for the pointless post, I just wanted to share. Cheers
  24. 25 points
    One from Sunday night, 23rd August. L=282 minutes RGB=100 mins / 100 mins / 96 minutes I'm not sure if the colours are right, and the centre needs a little work. Captured with SGPro, processed with APP and PS. Thanks for looking Adam.
  25. 24 points
    Great seeing last night, captured four red and blue runs from about midnight to 1am, this is the second run which was the best of the four, and also my best ever. Fullerscope with Altair 290m, APM 2.7x barlow (at 2.3x) and Baader filters (didn't use an ADC). 4.5 mins red & 4.5 mins blue with a synth green. No derotation. AS3 (best 15%)>Registax>Gimp 2.1
  26. 24 points
    Its been two years since I last imaged it so I thought it was about time to go back to M31. This image was captured over the last two nights from Berkshire UK using an Esprit100/SX46 for LRGB and a GT71/ASI1600 for Ha on a Mesu. 6hrs Lum, 3hrs Red and Green, 4hrs Blue and 13 hrs Ha. Processed in Pixinsight, APP and Photoshop. For the pixel peepers the camera is a bit heavy for the stock focuser and there's a bit of tilt showing in the corners. I've also posted the Ha data which shows the vast number of emission regions within the spiral arms which extend out beyond the corners of the frame. Thanks for looking Dave
  27. 24 points
    Hi! I'm Fran Not so long ago I took a picture of the ISS I never thought I was going to be able to get with the equipment I have. After saving for a long time, I was able to buy my first scope, an OTA Skywatcher 200P. I adapted it to be used in a dobsonian base because it was the cheapest way I had to get it to work. One night, I thought it might be cool to try to aim and record with my phone an ISS pass overhead. During the first attempt, I messed up the focus extremely bad but you can't imagine how happy I was to get a white blob in a frame that only I knew was the ISS. The following afternoon I tried again. This time the flyby was almost exactly overhead and the night was crystal clear. So I manually tracked the station looking through the finder scope and recording it with my phone at 1080p 60fps. Without much expectations I downloaded the files into my computer to review them. And was shocked with the results. The video was processed with PIPP, AutoStakkert and RegiStax. If someone told me the image was taken with a phone and manually tracked with a shitty dobsonian base I would not believe him! I got really lucky that night, but I can not be happier with the results. I believe I got to the edge of what I can accomplish with the equipment that I was able to buy. I'm not sure if ext step up should be a real camera or a mount. Anyway, any of them are too expensive If you want to see the frames before processing (and some nice shots of the moon that night), I'll leave a link to the video where I show them: Thank you so much for reading it all. Cheers, Fran
  28. 24 points
    Early 3.45am alarm call for Mars, but for a change the seeing was reasonable and it was such a change not to be imaging at 15 degrees at the bottom of my garden! The conditions seemed fairly stable from the time i popped the camera in, until Mars disappeared behind the trees. Great to be reunited with the red planet and see some nice detail, especially after the sand storms of 2 years ago. Captured with my C9.25, Asi 224mc. ADC and a X1.8 Barlow. 240 second SER FILE stacked/drizzled (x1.5) in A/S3 and lightly sharpened with CS2. Pretty pleased with the result, wish i had known Phobos was close by, i might have tried a longer exposure to see if i could have seen it as well.
  29. 23 points
    Hi This morning I've been treated with a wonderful occultation from my location. I leave some images of the phemomena. The first one is a composition of 5 images taken with an asi1600. The close-ups were imaged with an Asi224C Regards
  30. 21 points
    Hey Everyone- The Pelican Nebula - A Full SHO Rendition Full res: https://www.astrobin.com/full/f0vo2z/0/ It has been a long, long time since I have posted any photos or posts on here.. or any forum, really. Glad to be exploring some the works of art again. Anyway.. The smoke cleared this weekend and provided me with some excellent seeing conditions from Cincinnati. I’ve gathered about 12 total hours on this gorgeous emission nebula using my asi1600mm and 10” F/3.9 Newtonian. The area photographed is being sculpted by immense solar winds created from nearby stars and is truly a chaotic and evolving nebula It is a truly humbling sight to see dense pillars of gas, light years tall, pop up on your computer screen after a night of setting up. I may not have access to the dark skies that I used to but I will never, ever let that stop me from imaging the universe and the jaw dropping beauty that it beholds. I really hope you enjoy and would love to hear your thoughts and comments! Equipment: Cem60 10" f/3.9 Newtonian Asi1600mm-p Astrodon 3nm Ha/Oiii/Sii ZWO EAF
  31. 21 points
    Here are a colour and IR image of Mars taken on the 9th September. Solis Lacus is prominent in the images plus lots of detail in the surrounding regions. Thank goodness for Mars at 40 degs, Jupiter and Saturn have been hopeless recently. Peter
  32. 21 points
    With about a month to go to opposition and a month since my last clear night, I thought that I couldn't miss the chance of observing the red planet tonight, as all sources were indicating a clear night. I had my new Baader Hyperion zoom and barlow, plus a cute little University Optics 7mm ortho, I hadn't tried yet, so thinking tonight was the night, I set up around 10pm. I thought I'd get ready then have a little nap until later, when Mars would be in a good position to view. Started with double-double and the seeing looked good. I could split them both at around x 85-90 and the collimation star test had reasonably stable diffraction rings - better than usual for here anyway. Then I looked up and saw the dreaded clouds. I went back inside and moaned online and had a beer. 01:00 and things were clearing up. I went back out and saw that Mars was visible from the bottom of the garden. It wasn't a great location, observing East right over the roof of the house, but beggars can't be choosers and I didn't want to risk waiting until 4-5 am for a better view. So I set up under the watchful eye of the cat, getting all the various EPs I thought would be useful, and settled down to find the best viewing setup. I tried the zoom, barlowed zoom, barlowed 12mm BST, but by far the best view was with the new 7mm ortho. I didn't try the 6mm or 4mm Circle-T orthos, though. Perhaps next time. The view wasn't great at first, with the seeing poor at that lower angle and over the roof. The 40 deg FOV at 170x meant I was constantly nudging the dob, but it was pretty much just Azimuth movement that was needed, with the occasional Alt nudge, so I could get on with just observing relatively OK. I'm not a seasoned planetary viewer, but have heard enough to know that I needed to settle down and just do the time at the eyepiece. I kept getting momentary glimpses of dark bands and a white cap - the once pale disk slowly shifting into a creamy orange with some surface detail. I guess most of you are all familiar with what happens but it was fascinating how the details started to slowly emerge. Suddenly I got the urge to record what I was seeing. No hope for a picture, so I decided to do my first sketch. Completely unprepared, I went back inside, grabbed some printer paper and hastily drew some circles around the base of the empty beer can. With red head torch on dimmest setting I sat down again and started to mark down the darker areas. By 02:00 I was happy and started winding up. When I looked back up, I saw that the Pleiades had risen above the house, so quickly grabbed the 30mm 2" EP for a quick view. Here's my first sketch (coloured in now). As I said, I hadn't really considered ever doing one before, so not exactly sure of the correct format, so forgive any naivety. I still need to try and work out what I saw and how it compares to Sky Safari's representation. Fingers crossed I haven't got it completely wrong....
  33. 21 points
    Taken with a C9.25 in fairly mixed seeing conditions only managed a couple of runs on both Saturn & mars!
  34. 20 points
    The seeing Gods were smiling last night and I had my best views of Mars so far this opposition and consequently my best Mars image ever at 42 degrees altitude. Lots of detail visible in the equatorial regions from Sinus Meridiani through Chryse to Aurorae Sinus. The blue mist on the bright limb that I saw on screen early in the session did not really show up after processing for some reason. The next few months should give some great viewing of Mars, looking forward to it, weather permitting. It's been a while since we had a decent planetary view from the UK. Peter
  35. 20 points
    I was planning on shooting this again tonight, I wasnt sure if last nights data was any good because I developed an extra diffraction spike through the session. This is it here: ED80 R/G/B: 3300/2700/3000s 180ED LUM: 7560s Total time: 4.6 hours SGPro/APP/PS Thank for looking Adam.
  36. 20 points
    Since receiving my scope and mount from FLO a couple of weeks ago, I've had a few opportunities to get out under the stars with everything and gain some experience with all the features of a GoTo mount for the first time. I have to say that in particular, finding and framing a target using platesolving is a huge time save compared to using a star tracker! I'm still trying to get the best results possible from my guiding, if anyone is interested I have another thread covering that in the mounts discussion section. This image represents my efforts from two initial nights of imaging, the first cut short by dew (my next upgrade will be dew tapes and a controller). My focus held relatively steady on both nights, slowly worsening (as expected) as the temperature dropped, so an autofocus solution is in the pipeline too! I was relatively ruthless with the data regarding which subs to keep, so the final stack represents just under 8 hours of data out of a total 12 captured. I performed a large dither after every frame to combat the DSLR noise profile, which appears to have worked well. I have to say I expected the Hα signal to come through a little stronger, but I'm not prepared to modify my camera just yet so I will have to live with it / shoot broadband targets instead. As always, any CC would be appreciated! Imaging scope: Esprit 100 with FF Imaging camera: Canon 6D (unmodified) Guide scope: 9x50 finder Guide camera: ZWO ASI224MC Mount: iOptron CEM40 (non-EC) Image details: 7 hours 42 minutes in 120s subs Processing: PixInsight and Adobe Lightroom Cheers
  37. 20 points
    Some really steady seeing early this morning 1am to 2am, definitely worth dragging myself out of bed for. Solis Lacus bang in the centre and Valles Marineris nicely seen. 40 mins worth of 2 minute captures with 30% stacked and derotated. AS3>Registax>Gimp. 8.75" Fullerscope with Altair 224c (Baader L filter), 2.7x APM barlow & ZWO ADC.
  38. 20 points
    Well, I doubt I'll have the time and patience (and weather) to be able to do one a day. But as inspired by @mikeDnight, I thought I'd keep trying to hone my skills over the coming opposition. Tonight's seeing was poor at times, but variable and sometimes OK. It was windy with clouds. I tried with several ortho EPs, each magnification seemed to bring out different features. Anyway - I need to work out how best to try and implement each sketch. Today, I'm mucking about with a bit of IT to help the final display. Hope you like it, I'm quite pleased with it.
  39. 20 points
    Finally I got first light with my new telescope, a Sky-Watcher Esprit 100. First target was NGC 9662 and in total I got 3 hours and 30 minutes of data from one night. In total I got 42 subs with 300 seconds taken with my Nikon D810A and a Astronomik UHC clip-in filter, all mounted on my Sky-Watcher AZ-EQ5 GT. Guiding and exposures was all controlled with my ASIAir Pro. Stacking and calibration was done in PixInsight and final touches in Photoshop.
  40. 19 points
    Here's a TL of a rather nice prom from yesterday, it spans about an hour in real time.
  41. 19 points
    These must be like buses, you don't see one for a while, then two come along at once. I was mightily impressed with @gorann's M31 image taken with a RASA 8 and ASI 2600 OSC, especially as it was just 90 mins integration, and coupled with my M31 mosaic project not really getting off the ground due to the miserable UK weather, I took the plunge and spent the annual astro budget on a RASA 8. This was coupled to @Tomatobro's Atik Horizon II OSC, mounted on a Mesu 200 with no guiding. This is 64 x 45 sec exposures, using Atik's Low setting for gain and offset, full calibration frames and stacked in APP, processed in StarTools 1.6. It's certainly not as crisp or deep as Göran's image, as would be expected, given the Panasonic sensor is not as high a specification as the Sony chip. The star shapes are also not great, I suspect imprecise spacing or possibly camera tilt. I am not impressed with the squidgy material Celestron have glued to the back of the screw on M42 adapter, I can easily see how it might compress unevenly when tightened down. This was also manually focussed, no Bahtinov or auto focuser available. However, I am impressed with what was captured in just 48 minutes, this combination really works for me under UK skies, I can't see me buying another CCD camera. Thanks for looking.
  42. 19 points
    The moon is out so time for NB imaging and I continue trying out my new RASA 8. The RASA 8 is an f/2 telescope so normal narrowband filters work poorly. So far I have only one of those dedicated high-speed filters (only Baader makes them) and I recently collected Ha from this object with the High-speed Baader Ha filter but I am still waiting for the High-speed Baader Oiii filter (apparently in production) and a high-speed Sii filter is on the way in the mail from Germany. Last night in desperation I put on my 8.5 nm Baader Oiii filter to se if I could get anything, and it turned out I got quite a lot of signal, and no annoying reflexes. So here is the result of a Ha-Oiii imaging attempt of Sh2-119, the less well known nebula just "to the left" of the North America Nebula. Ha in the red channel and Oiii in the blue channel, and I made a synthetic green channel by 50:50 mixing of the Ha and Oiii data. Then I tweeked the colours towards an RGB look. All done in PS except initial calibration and stacking in PI. Ha: 69 x 5 min. Oiii: 30 x 5 min, so tatally 8.2 hours. ASI1600MMpro Gain 139, offset 50, -20°C. NEQ6 mount.
  43. 19 points
    This image is the result of having three times more data than in my previous post. Taken over three nights with the RASA8 and ASI2600MC (4 min exposures at gain 100). It made such a difference that I post it separately. So now 6 hours in stead of two hours and even at f/2, faint objects like these "dark" nebulae need integration time. Much less frustrating to process and no NR had to be applied this time. Data collected over three nights 24 - 27 August. Stacked in PI and processed in PS. No crop so the RASA 8 is quite good at filling up the ASP-C sized chip of the ASI2600. No flats or darks or any calibration done and not needed as far as I can tell. With regard to capturing photons, 6 hours at f/2 should equal 70 hours at f/7, if I got it right. Someone may correct me like @ollypenrice or @vlaiv...... For comparison I put the two hour version below the new 6 hour one. LDN 1228 is a dark nebulosity site in Cepheus. Quite some amazing shapes formed by the dark dust - food for fantasy. I am not totally unhappy for the clouds that have rolled in - have not got much sleep the last nights, not the least because the old Mac Powerbook decided now and then to stop downloading subs, so I had to keep a watch.
  44. 19 points
    My first HaRGB with the RASA 8. RGB with ASI2600MC (87 x 2 min, gain 100, moonless on 25 August) and Ha with ASI1600MM (61 x 5 min, gain 139, full moon on 31 August). Baader fast Ha 2" filter. This is a Ha emission region in Cygnus and the Tulip is to the right, and adds to my Sharpless collection. Not sure if the other nebulosity in the image has any designation, but it is quite a lot of it around. There is also some nice dark nebulosity and three intriguing red filamental structures just to the left of the centre of the image. I wonder what they may be. The RGB image looked rater uniteresting so the Ha collected last night made a big difference.
  45. 19 points
    This august monument, several hundred yards from the mansion house, was erected for the Earl Bishop between 1779-83. It was built in memory of his lordship's elder brother George, 2nd Earl of Bristol, who died a bachelor in 1775. The mausoleum stands between the Lion's Gate and the Bishop's Gate. The monument was crowned with a domed monopteral tempietto, contained a fine statue of the Earl Bishop's brother, in Roman dress, by John van Nost the younger. Neither the tempietto nor the statue could withstand the storms of 1839, since when the fragments have lain around the base of the now stunted monument, awaiting restoration. It took me some time to complete this photograph. It's my first Milky Way image shot at 35mm. The sky was shot separately and was tracked and stacked. My plan for the foreground was to illuminate it using light painting with a drone technique but the wind was so strong I just shot it as is. Illuminated by light pollution from Coleraine, as I was facing Limavady direction it worked quite well. Some technical details: Sky: Tracked - 5 Exposures 180s long at 35mm | f4 | ISO 800 | 25 Flats | 6 Darks | No Bias Stacked in DSS and edited in PS Foreground: 10 Exposures 30s long at 35mm | f2.8 | ISO 200 stacked in PS to reduced noise.
  46. 19 points
    Ta da ...... And as the FLO sticker said - clouds really were inside
  47. 18 points
    Grabbed NGC7822 in RGB 12x 900s in each RGB. Surprising how much variation in colour it has. Imaged taken with the12inch Newtonian and H35 camera. thanks for looking Peter
  48. 18 points
    Hi Guys, Here is a mosaic taken by separate captures on the morning of the 14th September. I managed to capture the tiny moons Phobos and Diemos,- (just 12km diameter). I autoguided on the planet using PHD2 using a separate 20 second exposure, and combined the images in layers using Gimp. Details of equipment is on the image. Best Wishes Harvey
  49. 18 points
    Some explanations about the photo captions: First of all, I put the date and time as stated in WinJUpos Then I place the CM, which are the meridians used to locate the positions on Jupiter, the most important is the CMIII which is the Magnetic meridian, as it never changes. So any scholar can accurately locate something on Jupiter and compare it to another photographer's photo anywhere in the world. Because Jupiter has a very dynamic atmosphere and new things are always coming up like Outbreak in the temperate zone above the GRS. Above the setup I made an estimate of the seeing and put the altitude that the star was at the time of the photo. Then I put the setup that was used to make the photo, this is also important to give an idea of the level reached, because you can't want a C8 to take a photo with the details of a C14, can you? Finally, I put the place where the photo was taken, in this case, República Rio Grandense because we declared independence.
  50. 18 points
    Still testing and tuning the Epsilon 130, I believe I have a pinched mirror due to over tightening the mirror clips. I also want to mask out the mirror clips to remove the reflections around the brighter stars so still work to do. This is just 3 hours in 180 second subs. I upped the gain to 100 and trialed using dark flats instead of darks. I ended up with a much cleaner stack than before so i might continue with gain 100 and gather some short exposures for the stars. Asi2600 through a Tak Epsilon 130 mounted on an AzEq6 Processed in PI, APP and PS. Richard.
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