AstronomyUkraine Posted November 27, 2020 Share Posted November 27, 2020 I started off imaging M31 in Ha, until the moon started to interfere too much. After 3 hours I switched to NGC1499 and reduced the brightness in the images significantly. Below are the two sets of Ha data from last night, both approx. 3 hours. I lost a couple of hours because of light cloud.M31NGC1499 7 Quote Link to comment Share on other sites More sharing options...
Gina Posted November 27, 2020 Share Posted November 27, 2020 Nice ? 1 Quote Link to comment Share on other sites More sharing options...
TerryMcK Posted November 27, 2020 Share Posted November 27, 2020 Excellent data. You must have decent skies at the moment Brian. Which Ha filter did you use? Quote Link to comment Share on other sites More sharing options...
AstronomyUkraine Posted November 27, 2020 Author Share Posted November 27, 2020 Posted by: @TerryMcK Excellent data. You must have decent skies at the moment Brian. Which Ha filter did you use?Thanks Terry. The seeing was quite bad last night, very thin low cloud, and heavy dew. The filters I use are Optolong, not the best by any means, but decent enough. The Ha is 7nm, the OIII and SII are 6.5nm. According to Clear Outside, my sky quality is 20.63, and Bortle 4, which is about right. Quote Link to comment Share on other sites More sharing options...
TerryMcK Posted November 27, 2020 Share Posted November 27, 2020 Very nice. I’m in Bortle 7/8 and surrounded by neighbours with insecurity lights. No worries though as I do mainly narrowband Ha, SII, OIII in mono. For true colour I use my OSC with either an IDAS D2 or Altair Astro Tribander. We have lots of LED streetlights and domestic LEDs around here now and those two block out the offending spectrums. My cameras are both ASI183s in mono and colour so it is easy to blend the images if required. 1 Quote Link to comment Share on other sites More sharing options...
AstronomyUkraine Posted November 27, 2020 Author Share Posted November 27, 2020 Posted by: @TerryMcK Very nice. I’m in Bortle 7/8 and surrounded by neighbours with insecurity lights.No problems like that here, got a few streetlights in the vicinity, but they are quite weak tungsten lights. The annoying thing about those insecurity lights as you call them. ? Nobody takes a blind bit of notice when they come on and off all night. Once the owners realise it's cats and dogs turning them on, they never bother checking after a few weeks. Quote Link to comment Share on other sites More sharing options...
TerryMcK Posted November 27, 2020 Share Posted November 27, 2020 We have a guy in the next house who put up lights about a month ago and they are dusk until dawn lights. Left on all night. They were not angled correctly and were shining into my upper windows. I asked him to point them down and he said “he will point them down as much as he can but if they don’t move anymore that’s all he can do about it. On account of car thefts from driveways blah blah blah.”” They are 10 watts lamps and set 3 metres above ground and 6.35 m from your perimeter wall” - he had all the figures which were actually meaningless.10watt LED lamps have the same light output as 100watt halogen car bulbs so are very bright. Car thefts from the area I live in are not common. Hence the insecurity lights LOL.He did manage to squeeze a bit out of adjustment out of them and although still shining into a couple of windows are not as bad as it was. In the UK we have laws against nuisance lighting and I could have invoked that but want to keep on relatively good terms with him.Most people around here have infra red cctv cameras instead - me included. 1 Quote Link to comment Share on other sites More sharing options...
paulgrover68 Posted November 27, 2020 Share Posted November 27, 2020 Looking good. Like the waves in 1499. I am envious, we have clouds many, many clouds Quote Link to comment Share on other sites More sharing options...
AstronomyUkraine Posted November 27, 2020 Author Share Posted November 27, 2020 Posted by: @paulgrover68 I am envious, we have clouds many, many cloudsThis was my first clear night in 3 weeks, and probably the last for at least the next week. It's not easy trying to throw an image together with all this cloud around. Quote Link to comment Share on other sites More sharing options...
paulgrover68 Posted November 27, 2020 Share Posted November 27, 2020 I feel that pain. On monday the sky was clear when arrived home. I set up. Clouds. I wait. No sign of clouds breaking. I breakdown. Half an hour later fully clear. I set up. I align, I swing to target... clouds return. No sign of a break. I wait I give up... break down and it clears as I put the last bit away. That said the satisfaction of getting some data is immense especially when it looks that good. Quote Link to comment Share on other sites More sharing options...
AstronomyUkraine Posted November 27, 2020 Author Share Posted November 27, 2020 Posted by: @paulgrover68 That said the satisfaction of getting some data is immense especially when it looks that good.No doubt about that, but someone like myself who likes to take anything up to 30 hours on a target, it can take many weeks sometimes to finish collecting enough data. Quote Link to comment Share on other sites More sharing options...
paulgrover68 Posted November 27, 2020 Share Posted November 27, 2020 30 hours is truely awesome. That kind of dedication is massively inspiring to a noob like me. What I love about imaging is the more you put in the more it gives back. Right now I'm trying to break the 4 hour wall. I want to throw some mutliple night sessions at winter nebulae. Quote Link to comment Share on other sites More sharing options...
AstronomyUkraine Posted November 27, 2020 Author Share Posted November 27, 2020 Posted by: @paulgrover68 What I love about imaging is the more you put in the more it gives back.My way of thinking is, why spend all this money on astro gear, then not use it to get the best image possible out of it. My gear is not the greatest in the world, in fact both my scope and mount are 15 years old now. I know when I started in this hobby, I was flitting around all over the place, wondering why my 30 minutes of data looked crap, and nothing like the nice images online. Information on astrophotography was quite scare at that time, so I had no idea what I was doing. Quote Link to comment Share on other sites More sharing options...
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