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About Philter

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  1. Thanks @geeklee and @Clarkey I'm using the native ZWO drive in APT and I had the "Manage gain" option ticked in the CCD settings tab. I think this means that I need to explicitly state the gain in the plan settings which I set at 100 (unity gain as far as I'm aware). I'd left the offset field blank in both the CCD settings and plan settings but I think should have set at around 50 as Clarkey says. I guess there's not much I can do about it now but at least I'll know for next time whenever that is, ha ha.
  2. Very nice. I can see the dark detail the extra data has brought out. It's a lovely image.
  3. Ah, trees. I ran into that problem the other night. I look forward to the result.
  4. Bortle 2! I'm jealous, ha ha. It's still a great capture and I'd love to see what would get with more time.
  5. One thing I completely forgot to mention in my original post but wanted to ask about is offset. I set the gain manually in APT but forgot to put an offset in my plan details. The FITS header shows an offset of 1 in my captures but I've read I should use a value of about 50. From what I can see using an offset that's too low can cause clipping. Will I have lost some detail by not setting the offset properly?
  6. Wow. I'd say that's a great image in general but for 10.5 minutes it's amazing! It puts my efforts to shame
  7. Thank you. Whatever my next target is I know I need to get a lot more data. I'm going to have to make a serious effort in learning to use layers and masks to get the most out of my images particularly when imaging objects like M42 where multiple exposure times might be needed for different areas. Time to start looking for some tutorials!
  8. I bought an ASI533MC last year and I finally managed to use it for DSO imaging on Tuesday night. I've messed around with my DSLR before but I found it fiddly and what data I did get seemed very noisy and hard to process so I never really got far with it. This was also my first real attempt at guiding and I'm not sure if it's uncovered an issue with the mount (large DEC backlash). Sky-Watcher Evostar 80ED DS-Pro with 0.85x reducer/flattener ZWO ASI533MC at -15c IDAS D2 filter HEQ5 Pro 28 x 120s lights (56 mins) - I lost M42 behind trees so I couldn't ge
  9. Philter

    DSO Imaging

  10. It's very sporadic for me and sometimes I can go for long periods without setting up my scope. I've been trying to get a proper start in imaging but it's just not possible to do anything in the brighter spring/summer months as I usually have to be finished by midnight. I know I'll never be able to put the time in to capture anything like the stunning pictures posted here but what I do get will be mine. I actually love the early nights and I'm looking forward to September when I reckon I'll start to get some usable time with my new ASI533MC...weather permitting, of course.
  11. I had a look at the flightradar24.com playback for around that time and it looks like a DHL 757 was passing over Marlbourough on it's way from East Midlands Airport to Madrid. Could it be that? https://www.flightradar24.com/2020-05-12/02:00/12x/BCS8930/247c2851
  12. Well, it's certainly a great result! I've got the ASI533 on order but I'm not sure when it'll arrive. With the nights getting shorter it might not get much use on DSO's until later on in the year so I was thinking of trying some lunar imaging with my 9.25" SCT. It should give me a wider FOV compared to my ASI224 even if I don't use the full resolution. I definitely want to try a mosaic after seeing your image!
  13. Wow, that's fantastic! Did you use the full resolution of the ASI553 for capture?
  14. They're great images! I particularly like the M3. I've got the ASI553 on order from FLO and I'll be using it with an Evostar 80ED too.
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