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Showing content with the highest reputation on 02/04/20 in all areas

  1. 17 points
    FSQ 106 with .6x reducer and ASI 1600. 9.5 hours Ha: SII: OIII SHO palette
  2. 12 points
    During the clear spell last week I managed to get 10 hrs worth of data on M81 and 82 using an FLT98 + 0.8 reducer and Atik One 6.0 CCD. 16 x 10 min each of RGB and 28 x 5 min of L. Stacked in Astroart, registered with Registar and processed with Startools and PS. I was wondering whether I could see the dust lanes as seen in other images and while they were visible they were noisy so I've just shown a hint of them and used Olly's trick of flattening the PS curve just below the level of the dust to remove a lot of the noise. The very bright stars tended to be composed of coloured rings so I blurred the centre of those stars as a separate layer in PS and substituted mono versions of the stars on another layer of those that were beyond help. The two bright stars bottom left also had two very noticible diffraction spikes on just the red channel so there may be a hair on the filter or something. I've hidden the spikes reasonably well. Just to the left of M81 there is a smudge which is actually Holmberg IX, a dwarf irregular galaxy of magnitude 16.5 and is a satellite galaxy of M81. This is on my dual rig with the other one being an ASI 1600 and a ZS61 so I have the same amount of data on that minus those spoiled by dithering the Atik images. While it's a significantly shorter focal length the smaller pixel size means the difference in imaging scale is not that great. I'll process that later to see how the CMOS camera compares to the CCD. Alan
  3. 11 points
    I took this on Tuesday night as a test of my ZWO ASI294MC Pro. (-12C, gain 126.) 40 x 240s lights, 15 darks, 25 flats, 25 bias. Total exposure time: 2h 40m. I usually use a DSLR, so processing the fits files was interesting! I used a combination of DSS, Siril, Starnet++ and Photoshop for the final image. Taken with the C11 and focal reducer.
  4. 10 points
    Hi all. Managed to grab this last week when i had a ridiculous 5 nights in a row, which coincided with the start of the lockdown here in Ireland. Missed the first of them due to illness but took advantage of the rest. It really was a very welcome distraction from the obvious. I hope everyone is safe and well. Ngc 4565 is an edge on spiral galaxy in Coma Berenices. At only 40 million light years from Earth and being about 1/3 larger than our Milky Way makes this a popular galaxy to image and observe. It's long been a favorite of mine along with the Sombrero due to that edge on view, similar to the view we have into the core of our galaxy. Captured with my Asi 2600mc through an Esprit 100 mounted on an Az Eq6 180 second subs by 176. 8.8hrs Processed in PI, PS and APP Best wishes to everyone Richard.
  5. 9 points
    This is what Wiki writes about this object: NGC 4490, also known as the Cocoon Galaxy, is a barred spiral galaxy in the constellation Canes Venetici. It lies at a distance of 25 million ly from Earth. It interacts with its smaller companion NGC4485 and as a result is a starbust galaxy. NGC 4490 and NGC 4485 are collectively known in the Atlas of Peculiar Galaxies as Arp 269. Caught over two recent nights with my Meade 14" LX200R (f/10 so FL 3550 mm) and Sony A7s (run at full frame and ISO3200) on the EQ8 (Lodestar X2 and ZWO OAG). 153 x 3minutes = 7.65 hours with a bit of moon around. PS. I have to tell you a bit about the scope I used for this and some other recent images. About a year ago I by chance saw an advertisement on the general buy&sell site in Norway for a 14" f/10 Meade LX200R OTA and the seller was only a few minutes away from my house. LX200R ("R" for Ritchey-Chretien) is the original name for what Meade after losing a court case had to rename "ACF". I found the price quite reasonable (about 2500 Euro) for such a big scope but from what I had read about astrophotography, imaging with a 3.55 metre focal length scope like this one is extremely challenging and bound to be a big disappointment. My main interest is imaging, but I still could not resist having a look at it, and after seeing that big and dusty (only on the outside) scope tucked away in an attic, I was sold and I just had to buy it. I brought it across the border to my weekend house (once a small farm) in Sweden where light pollution is absent and where I had built my obsy. I soon realized that it would not fit under my obsy roof, and as it weighed 40+ kg, occasionally exchanging it for my refractors was not an option. So I decided to build a second obsy where I could put it on my old EQ8, that had been retired and was tucked away in my garage after I got my Mesu200 mount. My thought was to use it visually and in any case I did not have any camera with big enough pixels to match the focal length of a 14" SCT. When the obsy was built, and the big SCT was sitting there on the EQ8, I could not resist trying to do some imaging, and to my surprise, the old EQ8 and the big scope worked very well together. I have never had eggy stars with this set up and as long as seeing is relatively good, I get quite decent guiding, often around 0.4 "/pixel. So now I have also invested in a dedicated camera for the big SCT: a Sony A7s, a full frame APS camera with 8.4 µm pixels that I found on ebay and had JTW in Holland to full-spectrum modify. Now the new surprise was that the SCT fills essentially the whole 24 x 36 mm frame (only darkened at the very end of the corners) with nice round stars - and not very bloated stars as often seen with STCs. So this bargain scope made in the early years of this century in the US (before Meade was bought up and moved manufacturing to Mexico and then China) is now my prime galaxy hunter, and I like her more and more!
  6. 9 points
    Managed to grab a few frames of the ISS as it flew over recently using my dob and DSLR. Pretty happy with this though I've a lot to learn. Focusing could be better. Hope everyone is well and not too frazzled. Maybe getting some garden stargazing done?
  7. 9 points
    I managed a quick fifty minutes or so session last evening before the cloud closed in again. A lot of cloud dodging and indifferent seeing but I persisted as I wanted to capture the 'Eyes of Clavius' effect caused by the rims of two craters catching the sunlight when the interior of the crater is otherwise filled with shadow. I must admit, I had never given this effect any name myself, though I have seen it many times. According to the April issue of Sky at Night magazine (in their April Highlights) the Eyes of Clavius is the clair-obscur name given to this phenomena. The single frame below was taken at 7.17 pm with the SW 120ED, Olympus E-M5 Mk11, 1/200 sec at 400 asa. The close-ups are all crops taken from the same frame.
  8. 8 points
    Hi every one, starting at the end of Jan this year I turned my attention to doing the Galaxies, starting with M66 [along with a couple of comets] with my ODK 12" and my new Altair Astro 294C OSC cam with a Baader Moon & Skyglow Neodymium-Filter. These 4 pics are the result up till now. Thanks for looking, Bob.
  9. 8 points
    First light for my new ASI1600MM-Pro - my original ASI1600MM cooling failed, long story, will try to get a repair done..... This is a 4hr total exposure image, so not quite as deep as Emil's version posted yesterday. I used APP, PI, PS and the new Topaz AI noise reducing tool, which worked rather well. I also put the IDAS D2 filter back into the optical chain as the path behind my house has been changed to LED and has messed up broadband RGB with horrendous gradients - the IDAS D2 doesn't remove gradients 100% but at least I got colour into the image.. I found this great article on Skye and Telescope website Yanking Markarian's Chain written by Bob King - hence topic title.... 30 subs of each filter LRGB x 120s Note: I am aware there is a faint slightly curved wide'ish line from top Middle right of image down to bottom right - very confused as no subs had any satellite tracks, none of flats show this artifact - so for time being I'm posting this but will continue to investigate, thanks again for looking and any comments you may have, Bryan
  10. 8 points
    Unexpected gap(s) in the cloud cover this morning allowed me a look at the new AR. Had hoped to get some hi res Ca-K shots but seeing was average at best and there was a bit of a breeze to boot (not good with the Evostar on the mount). Initial session with the Evostar was curtailed by cloud but then skies cleared again a little later so grabbed the Bresser for some full-disks. So here's the initial Evostar shots at native 1000mm focal length. The AR in Ca-K and White Light and then the faint prominences in Ca-K Then the full disk shots with the Bresser stopped down to 50mm. The Ca-K disk is a combination of two layers; one for proms and another for 'surface'.
  11. 8 points
    This is the start of my Markarian's chain project, well, more than half way actually as I want to make the fainter stuff show up a bit nicer and also reduce the noise in the final stack. A few days ago I stacked what I gathered so far to see how it looks like and after adding the annotation in pixinsight I was shocked by the number of galaxies in the photo. Eq3 Pro TS65 quadruplet f6.5 imaging telescope ZWO ASI294MC PRO cooled at -15°C IDAS LPS-D2 2" filter Qhy5 guide camera 9x50 finder-guider 131x300sec, 10.9 hours Location: Bushey, Bortle 6 Date: 24.02.2020, 02.03 and 24.03.2020 Emil
  12. 7 points
    Because of the current situation, I have, as many of you guys probably have too, spend a lot more time under the stars when possible. It has literally been over a year since last I was out doing some astrophotography because of work. So here is my second take after the long break, NGC 3344 (The Sliced Onion Galaxy). Initially I thought it would be a lot fainter than it was, so it was basically a shot in the dark, of just trying to get back at doing this. But the final image actually showed a lot more detail than I would've hoped for! Spring lent a lot of clear night, but those seems to be gone already. I would've hoped for a few more hours to add some more luminance data to it, as I did have to push it quite a bit. I am not too happy with the shape of the stars either. Guiding was not very stable through the night, even though balance and polar alignment seemed to be good. Might need to update my Celestron PEC data? Any advice or feedback is very welcome! NGC 3344 (Sliced Onion Galaxy) _______________________ Image: Luminance - 13x16 min RGB - 2x16 min each Flat and Dark calibrated Gain 111 Offset 40 Total Integration - 5 Hours 4 minutes (LRGB) _____________________ Gear Used: Skywatcher 150PDS Celestron AVX Mount ZWO ASI 183MM-Pro Baader 2'' Neodymium Filter Baader 1,25'' RGB Filters ZWO Mini EFWExplore Scientific Coma CorrectorToupTek Camera G-1200-KMB Mono GuiderOrion Mini 50mm Guidescope ______________________ Software:SharpcapPHD 2Photoshop CS2Deep Sky StackerStellarium/Stellarium ScopeAstrotortilla
  13. 6 points
    Venus has been approaching The Pleiades region and will appear to pass directly in front of the open star cluster over the next few nights. Here is a one-off shot I took of Venus beneath The Pleiades last evening (4/01) with my Nikon D3200 with zoom lens (at 300x): Clear skies! Reggie
  14. 6 points
    Hi all, I was lucky to be at the Kielder star party just before the travel restrictions. In fact doubly lucky as the sky was pretty much clear enough on three of the four nights I was there. Some cloud passed through and there was a tiny bit of very high stuff but very nice for what I wanted. Here are two of my favorite images. One is Orion descending into the forest and to be honest I was almost too late ! The sky was so clear for a short while that the Milky Way came out quite detailed and bright. The bright patch to the lower right is the Zodiacal light and Venus muscling in. Details are Nikon Z6, Sigma, 14mm lens wide open, ISO 800 for 10 x 20 seconds. Stacked in Sequator as usual and tweaked in Light Room. The second shot is the usual Polar star trail shot that's really growing on me the more I do of them. I was definitely thinking of doing a little light painting this time but as I was surrounded by other people I thought it safer not to shine white lights round the place ! Nikon Z6, Sigma 14mm lens at f2.8, ISO 800 for 90 x 30 seconds. I was going to do 2 minute shots but my timer was on another camera. This was also stacked in Sequator due to the fact it doesn't try to lighten the overall shot as some of the other trail apps do. Then taken into Photoshop for many many tweaks So that's it for the foreseeable future. Dave.
  15. 6 points
    The weather is continuing to confound me. A little before dark there were misty holes in the cloud cover..... was hoping to manage a two piece mosaic - but about 25% into the first panel was completely socked in by the clouds. Sky was a bit brighter than I would have liked and the "whitish sky" played hell with contrast. This was my first try with my recently purchased Antares 1.5X Barlow, on my also "new to me" Skywatcher 120ED. Really need an extension! lol It works fine as is though, I have the scope prebalanced - let the mount do its thing THEN put the scope on. Happy with results given shooting conditions. Can hardly wait for decent sky with no clouds! (socked in again as I write this in AM) Also tried a new external SSD that seems really good. Samsung T5 500gb. Copied over 100GB of data from my cheapo HP laptop at 280mb/s steady on the laptop's USB3.0 connection. Happy with THAT! Been a bottle neck for me in past. Its so fast, next time I will attempt to run Firecapture straight from the external. I doubt it will run well, but worth a try! Firecapture, AS!3, IMPPG and LR6 Full file uploaded. Very best regards Mike
  16. 6 points
    Yesterday again good conditions for imaging... I'm currently capturing more data than I can process... Below one of the most beautiful regions on the moon. Click thumbnail for full size image. it's a two panel mosaic captured under reasonably good seeing. Enjoy. Clear skies, Wouter.
  17. 5 points
    Both single frame skymax 127 on AZ4 cannon 1000D prime the close up with x2 barlow
  18. 5 points
    With Cassiopeia circling low in the north and pulling the Milky Way along behind it, it should be galaxy season. However, the waxing moon, although less than half lit, was high in the sky and casting shadows across the yard. Beautiful skies though, with the deep midnight blue of a clear moonlit sky beating the sad grey and orange dome towards town. Hydra’s head poked above the rooftops to the south, catching my eye as a charming sparkle of stars in averted vision. Rising up into Cancer, barely visible in the moonlight. An unpromising start with... Delta Cancri: The faint companion invisible in the moon’s glare. An excellent latching-on point point though, from which to begin star hopping into the Beehive Cluster... South 571: Easy split of identical white pair. Brighter third in a pleasing triangle. STF 1254: Off piste (from the Sissy Haas list). Lovely uneven pair. 39 Cnc: Very wide with 40 Cnc. Better in binos? Scope showed a nice yellow/white contrast though. Leaving the cluster to stop at... 31 Cnc: Bright warm yellow with a splendid faint distant companion. 8mm. ...on the way to the unmissable... Tegmine: Spectacular! Bright yellow, close, slightly uneven double at 24mm. Primary elongated at 8mm and pinched waist becomes clear with barlow. Over into the Coma Berenices cluster. Like the Beehive, this cluster is close to us - just a few hundred light years rather than a few thousand for the Messier clusters that lead them across the sky in the Milky Way. Sparkly star fields that overflow the eyepiece! STF 1633: Fabulous pair of eyes peering back! 24mm 12 Com: Triple. Bright yellow primary A. Well separated from the pale grey/blue C but great contrast. 24mm. B appears in averted vision within the primary glare after adding a barlow to the mix. 8mm STF 1639: Very close white pair. Not quite even. Distant faint third. 8mm 17 Com: Better in binos? Very wide slightly uneven pair 24mm. Finishing with an outlier beyond the cluster... STF 1615: Easy uneven pair 24mm. Warm and cold contrasting colours. Mag 13 third member not seen. Bring out the dob! I used a Baader zoom which I find to be very practical for casual sessions on double stars. Take care everyone.
  19. 5 points
    Another "what can I do in a night?" job. Tried a few new things in post for this one, and in capture - captured in batches of 5 per filter with a few extra L batches, worked pretty well with the Baader filters all being parfocal. This was all on the 200P, ASI183MM-PRO, as per my usual. LRGB only, no Ha. The processing for this I stuck broadly to form on - but I stacked L, R, G, B and then stacked those stacks to form a super luminance. I then did denoising and then per-master deconvolution with a RangeMask as usual, and used the PSFImage script to come up with the PSF (which worked really well - amazed something like this isn't in PI natively). Then I did channel combination, denoised again, LRGB combination, the usual tidying up and whatnot. Quite happy with the result for a mere few hours of exposure - tried to pull more detail out in the centre, but didn't manage much without it looking a bit odd, so left it. The dust and clouds I can't pull more out of without more exposure time I think. Still quite a pleasing result I think.
  20. 5 points
    Hi everybody, It's been a while but seeing was good enough the 31st to shoot another large mosaic. Below a summary description on how i came to this result. You can click on the tumbnails too show the full res image. But beware, these are pretty big files. In total 32 SER-files 2500 frames each were recorded. using the CFF 300 f/20 Cassegrain, an ASI 174MM camera and a Baader 685 IR filter. Each file was then processed in Autostakkert! 3. Of each series 10% of frames were stacked with 1.5x drizzle. The stacked images were manually stitched together in Adobe photoshop CC. The resulting image was saved as a TIFF file and processed in Lynkeos3 Here I performed Lucy-Richardson deconvolution. 20 iterations, with a 2pixel radius. Final processing in Adobe Photoshop CC, this included high pass filtering, unsharp masking, cautious noise reduction and levels and curves adjustment. Enjoy the image. Feel free to share your comments. Clear skies, and good health. Wouter.
  21. 5 points
    I thought I'd give last night's data from the ED80 a quick look over, so I stacked the luminance, stretched it and gave it a teeny sharpen. Possibly I've stretched it a little too far, but other than that I don't think I'm unhappy... It's two hours ten minutes as five minute subs, ED80 and 314L+. I've reduced the size by 50% just for speed for the time being. Pleased to see the tiny edge-on galaxy just to the left of the smaller of the pair, though it is very faint. I'm fairly happy with the framing, too. I wouldn't mind losing the bright star at the bottom of the frame, but I want to keep the edge-on galaxy at the top right. Probably worth a revisit with ten minute subs I think, though given the amount of clear sky we've had in the last ten days it'll be Christmas before we get another clear night Perhaps a quick peek to see if there's any Ha worth having, too. Now I just need to work out how to align my binned colour subs with it. I don't think DSS can handle that. James
  22. 5 points
    OK, I realise the solar images I was producing with the ED80/ASI 1600 and the x2.5 Powermate resulted in a full disk image slightly larger than the chip size....bumma. The answer (other than finding a different Barlow...) was to take two images and join them as a mosaic covering the whole solar disk...sounds simple. Took the necessary two images, but noticed straight away that there were significant problems with gradients within the images which did not match.. First MS ICE; used by many to produce very good panoramic images - didn't work for me - couldn't get the two images to align... Over to CS5 - spent far too much time messing around with layers and gradients..... and ended up finding Photomerge....two minutes later (well actually more like 10 minutes, they were BIG tif files) - job done! (I had started with Scott Ireland's "bible" - Photoshop Astronomy, only to find it very out of date and only talks about CS and CS2...it was published in 2005) The attached H alpha image was taken on the 27 March 2020, SM60 DS/ ED80/ ASI 1600. If you can identify the joint, I'll send you a packet of toilet paper, or buy you a beer, whatever you prefer. Another tool in the box - hopefully to provide better full disk images in the future.
  23. 5 points
    Last night the seeing was better than normal. I put a Takahashi 1.6 extender onto the back of the Tal200 and the results were way beyond anything that I have managed before. I've also been playing with the settings in Sharpcap and been surprised with the differences that some settings make. This was shot in Raw16, Brightness 3, Gain 35 and Colour balance "Auto". I've no idea why "Auto" colour should make a difference, but it does seem to. There are 24 panels. This was processed in Autostakkert2! with the sharpening option. I tried the wavelets in Registax, but this didn't seem to produce any improvement. I also tried a couple of shots with a 2x barlow (total 6400mm) and these came out OK, but there would be far too much work involved in combining 80+ panels!!! Sorry about my poor mosaicing skills.
  24. 5 points
    My rendition of Messier 101 captured across the four nights of the 23rd, 24th, 25th & 26th March 2020. This image has been captured using the ZWO ASI1600mm Pro camera using the following Chroma filters; Red 61 x 120s binned 2x2 Green 77 x 120s binned 2x2 Blue 57 x 120s binned 2x2 Lum 33 x 180s & 55 x 300s binned 1x1 Ha 3nm 92 x 300s binned 1x1 Total integration time 20.4 hours. This image has been captured using the software Sequence Generator Pro and processed entirely in PixInsight. Thank you for checking in. John
  25. 4 points
    Just for fun really. I was trying to demonstrate to a friend that his 102/500 isn't completely worthless for imaging. 299x60sec, unguided, / 30 darks / 30 flats. SW 102/500 on Heq5, Canon 500d modified, baader 7nm Ha, from Athens Greece, bortle 8-9
  26. 4 points
    Not sure if this has been seen on here yet but, the attached video could oerhaps guide us on easier ways to excavate the foundations- guy was trying to erradicate cockroaches so filled their nes with petrol......
  27. 4 points
    17 x 1sec Canon 7D @274mm click for full res
  28. 4 points
    Not *in* the cluster, but helps with composition. Canon 6D MkII, WO Star71, AstroTrac, 3.2s, iso1600. Lightroom and Photoshop.
  29. 4 points
    Well a qualified success last night. Seeing not as good as other night, but a clear cloudless session. I may have over sharpened.... hard to judge after trying so many different ways of processing - eyes are tired. lol Full file uploaded. 120ED + 1.5 Barlow and ZWO ASI183MM. Three panel mosaic. Thanks for looking, and especially any feedback! I may very well have done just as well with much less work using the 120 at prime for a single panel stack given seeing. (?) Will do both next time. Best regards Mike Below is full unprocessed mosaic before sharpening/processing for reference. Its interesting to zoom in on the same spot with the files side by side.
  30. 4 points
    I popped my head out the door at 8pm and it was lovely so I setup the Skymax which had already been out cooling. 2 minutes later, clouds. During the next hour and a half I got precisely 1 usable image. I had a nice catch up with the neighbour though, and had a fascinating conversation with a nutter which was enlightening. The gist of said conversation was The science they teach you in school is wrong. According to the school science the Moon and Sun should be opposite each other in the sky. I saw them both in the sky together earlier today, plus we shouldn't be able to see the Moon now because the Sun is down under Australia (45 mins after sunset!) therefore the earth must be flat. Also Covid-19 is a hoax. Oh, and chemtrails. So there you go, we've all been doing it wrong Anyway, the Moon, single frame, captured this evening.
  31. 4 points
    Here is my WIP of the Rosette, data collected on the 12th, 15th and 18th March 2020. Ha 9600s Oiii 7800s Sii 4800s Takahashi Epsilson 180, Atik 383L+, Optolong NB filters, EFW3, 600s subs at -20oC, total integration time 6 hours 10 minutes Thanks for looking. Adam
  32. 4 points
    Even though this is just short of 33 hours , I still consider it to be WIP 4 hours each R,G, 8 hours B in 10 min subs, 8 hours HII in 10 min subs, 4 hr 45 min L in 5 min subs 130mm f/7 TS apo, ASI 1600, Baader LRGB and Astrodon H-alpha filters encoder guided on ASA DDM60 Sigma Add stacking in AstroArt 7, H-alpha added to Red channel, and more processing steps than I care to think about, but DDP, Histo Stretch (Several times) Points Gradient Removal on each stack and final RGB, two rounds of Colour Curves. Luminance given DDP and Max Entropy Deconvolution before LRGB synthesis I want another 4 hours ech Red and Green to balance the stack, plus Hydrogen (Maybe) and Luminance (Definitely). C&C welcome as always.
  33. 4 points
    For anyone interested in fixing their star shapes (subject is Vega) from this to this: I designed a 3D print on tinkercad (.sti file attached)Skywatcher 130PDS Newtonian Primary Mirror Aperture Mask.stl, found a local 3D print shop to make it for me and applied to the mirror clips as such: Inner diameter is 125mm, which is sufficient to cover the mirror edge and mirror clips. The idea is that the mask blocks the stray light from the edges, which causes the flares you see on bright stars and the ghost flares from the mirror clips blocking the edge flare. Hope this helps Minos
  34. 4 points
    After some issues with flats, I finally managed to process the data I got a few nights ago on the area around M86 and M84, using the Meade SN6 and ASI183MC. The background still shows residuals, but this is as good as I can get these data. Despite all the issues, I am pleased to have captured a load of fuzzies all in one go. I count at least 18, but there may be more. As ever, more data are needed, and I need to get my processing chain in order Tweaked the curves a bit, as the above version seems a bit dark on other monitors I have:
  35. 4 points
    Hope everyone's keeping safe in these uncertain times. Hard to believe it's been just over a year since i last posted something using new data. Where did that year go?! As luck would have it, a few weeks back, i collected all my astro gear from the old family home, where i do used to do all my imaging and moved it down to our place, where the skies are worse, and the sky views are much more obstructed. I wanted to have another go at using the C8 for imaging a galaxy, and luckily there was a clear night last week, so once the kids were asleep i set about trying my luck on the Whale Galaxy, as i knew it would definitely clear the tall trees at the back of the house. After spending far too long faffing about with an OAG and an old IDS-UI camera (which i now know isn't up to the job) i finally gave up on the OAG idea, but rather than just pack up, i decided to throw the finder-guider on there anyway and just see how things went. Time was against me, i only had a 2 hour window left, so could only dither every 3 frames. But at least the guiding held up well (under the circumstances) with the HEQ5-Pro. It went down as low as 0.67" at one point, never went over 1", and seemed to average at around 0.85", which was way better than i was expecting. I don't have an actual SCT FR, so to continue the bonkers theme i actually used my SW x0.85 one lol. Solving a frame in Astrometry gives an actual FL of 2,320mm (total insanity, i know) or F11.4 . I'm also just glad to have now finally got to use the Qhy163c that i bought off another SGL user in Spring of last year. So it only took me a year to get an image out of it! So this is: 40 x 180s (Gain 80, Offset 35), -15C C8, HEQ5-Pro Stacked in APP, and processed in PS. SGP was reporting HFR's from about 5.1-5.8. I've no idea if that's ok or terrible at this FL. I was just surprised that all 40 subs were keepers tbh, with none having trailed stars. It's a noisy beast i know, so apologies. And that's even with a generous dollop of NR and downsampling to 35% of the original size. It needs a tonne more exposure. Something i could have addressed the following night, which was also clear, but alas, i was way too tired to even consider it. But it was fun just to be out imaging again, even if it was just for this. I might even try it again, if the weather plays along that is! CS folks.
  36. 3 points
    I managed 2 ser runs today one for the disc and one for the proms. give them a click for full res
  37. 3 points
    Quick single sub, iso320, f9, 3.2 sec cropped and tweeted on phone.. Nice sight in the sky tonight.
  38. 3 points
    Gaps between the clouds were just enough to allow some shots of Venus nudging the Pleiades. Edit: canon 600d with 80-200mm lens and 2x teleconverter, 30s at 800ISO f13 sorry about the internal reflections- that’s not a new comet!
  39. 3 points
    On 31st March it was a particularly clear transparent night. I sent the scope to VV 259 in Coma and as usual waited to see what would appear. This shot got me so excited. There is so much going on here. VV 259 is the pair in contact just left of centre. They are designated PK, meaning pair in contact. They share the PGC designation 409101 and both are being distorted. The left one has a more well-defined nucleus. Mag 16 and 17, both spirals. Off to the right of VV 259 is UGC 7576 (mag 15.9). Strange tidal tails on either side of the galaxy. Freaky, so what is causing those features, especially as they are so symmetrical. A barred spiral. Now go past 7576 and down, look just below the star. There lurks PGC 1843788, mag 18.6. Go to the left and down a bit from VV259 and a faint patch of fuzz. This PGC 1839783, mag 17.6, an elliptical and 290 million lyrs away The big wow factor is the galaxy NGC 4448 -mag 11.2 and what a beauty. A barred spiral (SBab) and hints of dark dust lanes. So beautifully symmetrical. 78 million lyrs away. I cannot see a bar. To the right of 4448 is another faint galaxy (PGC 1843133) with obvious loose spiral arms (Sc) and mag 16 and 746 million lyrs away. This must be big and its brightness possibly due to it being actively forming stars? A little further to the right is PGC 1843743, mag 17 and a barred spiral (SBbc) and 752 million lyrs away. Could it in time interact with PGC 1843133? All of this seen under a very bright moonlit sky. At the time of the shot the scope was glistening with frost, I was having to pace up and down to keep warm....Always amazed what EEVA can achieve. Mike
  40. 3 points
    That’s basically what I did Barry. Wasn’t the best, but was worth going out. The craterlets challenge was a bit of a wash out as the seeing just wasn’t up to it. I saw two quite well as black pits, and another one or two very faintly. I also saw part of the Alpine Rille, but only a shortish section. Copernicus, Tycho and Clavius were looking spectacular even with the wobbly seeing. I was using my binoviewers at about x375 (roughly) and the detail was still amazing. These are two pretty rubbish shots through one eyepiece of the binoviewers. Gives a small flavour of the view, but quite a long way off how spectacular it was.
  41. 3 points
    With thanks to @johninderby, Tessa is much easier to handle now:
  42. 3 points
    New AR 2759 in CaK, H alpha ( Double stack and single stack) and White light. The bright proms made good targets....need to improve the processing skill's to combine prom images....
  43. 3 points
    That's kind of you Jeremy. I've not processed too many others as yet but did do this grab shot. On one evening some cloud came rolling in from the North and I thought it looked good for a shot. Same camera and lens and 20 seconds at ISO 800. Dave.
  44. 3 points
    Hi there, another attempt at my Heart Nebula data in Narrowband. Think I need a lot more data in OIII & SII as seem very week (In know it gets swamped by Ha but almost no data in an hour and a half of subs). Anyway. this is taken with my an ASI 1600 MM Pro and Canon 400mm camera lens. Ha - 1.5 hours OIII - 1 Hour SII - 1 Hour Any feedback much welcomed Thanks for looking.
  45. 3 points
    Update: The shipper (Bresser.de) will now be sending a replacement. They haven’t been able to get any response from UPS after days of trying which you would think being a big customer of UPS they would get. Anyway the people at Bresser have been really helpfull so top marks to them.
  46. 3 points
    Shot a 8 pane, 75 Mpixel mosaic of the moon this evening, using my Celestron C8 and ASI183MC camera Clicking for full resolution recommended
  47. 3 points
    Here is my try using PS... Thanks for posting the stacks, it's good to practice. I only use DSLRs so rarely process like this. In brief this is what I did:- 1. Combined the rgb into one one image and stretched and boosted colours then smoothed the image. 2. Resized the luminence, then stretched using curves and sharpened the bright areas. 3. Added the luminence as a layer, changed blend mode to luminosity. Increase curves to upper layer. Reduced curves on rgb layer. 4. Flattened the image, final colour boost and adjust background. Get rid of gradients and hot pixels. Cheers...
  48. 3 points
    been a bit of a trial to process this image, some channels did not like dark frames added, some did not like dark frames or bias frames added, blue channel was a pig, but i finally got to a reasonable looking image, around 60 lum subs and around 38 RGB subs, all of 3 minutes each sub, stacked in deep sky stacker, processed each channel in Startools, then combined and tweaked in photoshop cs3.
  49. 3 points
    Scope was the Altair Astro 102 ED-R, used with the Lunt CaK diagonal B600 and the Daystar Quark Chromosphere. Camera was the DMK 31.
  50. 3 points
    Down in Cornwall, we equalled our best SQM reading of 21.88 the other night, and there have been lots of readings over 21.6.
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