AstronomyUkraine Posted April 23 Share Posted April 23 This is 5 hours of Ha on NGC 6823 with my new Antlia 2.8nm filter. Up to now I'm very pleased with the results. Will give them a more thorough test once galaxy season is over. 5 Quote Link to comment Share on other sites More sharing options...
RaDec Posted April 23 Share Posted April 23 That’s a great image. What length of exp did you use? Quote Link to comment Share on other sites More sharing options...
AstronomyUkraine Posted April 23 Author Share Posted April 23 28 minutes ago, RaDec said: That’s a great image. What length of exp did you use? Thanks Keith. These are 600s exposures with a median value of around 550, which is really good. I wasn't getting median values as low as that with 300s exposures using my old 7nm filters. Quote Link to comment Share on other sites More sharing options...
RaDec Posted April 24 Share Posted April 24 Makes me wonder if I should increase my exp when I use the AA 4nm dualband. I generally use either 240s or 300s which worked well with my previous ZWO Duoband. Worth a try if we ever get a clear night here again! Quote Link to comment Share on other sites More sharing options...
AstronomyUkraine Posted April 24 Author Share Posted April 24 4 hours ago, RaDec said: Makes me wonder if I should increase my exp when I use the AA 4nm dualband. I generally use either 240s or 300s which worked well with my previous ZWO Duoband. Worth a try if we ever get a clear night here again! If your guiding is good enough for 300s, it's certainly good enough for 600s. The only downside to 600s, is losing an image because of cloud etc. Losing a 300s image is OK, but a 600s hurts. Quote Link to comment Share on other sites More sharing options...
Sonyme Posted April 24 Share Posted April 24 Lovely B & W image. Super detail and just the right balance between the nebulosity and star brightness. Gary 1 Quote Link to comment Share on other sites More sharing options...
AstronomyUkraine Posted April 25 Author Share Posted April 25 22 hours ago, Sonyme said: Lovely B & W image. Super detail and just the right balance between the nebulosity and star brightness. Gary Thanks Gary. I'm hoping to make it a full SHO before too long. Quote Link to comment Share on other sites More sharing options...
MartinS Posted April 27 Share Posted April 27 Very promising, looking forward to the completed SHO. Have you perceived any difference between the Antlia 2.8 and 3.0 filters? Quote Link to comment Share on other sites More sharing options...
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