Iris Nebula NGC 7023 problem

[dark star]

The problem is that I cannot see it when taking 300 second pictures with a modified Canon 450d, an Equinox 80ed refractor and an Astronomik CLS clip filter. I also tried 600 seconds without success. I have tried twice, at least once I was in the right place as I afterwards plate solved the image with Astrotortilla. Both times I gave up. How long an exposure do I need to see this in a single image? Or if I take a lot of exposures and stack and process the images will it appear? The Bubble Nebula for example I can easily see  at least something in a single exposure. I think this must be very difficult to image! I have bad light pollution so would be limited to short exposures without the clip filter. Could it be filtering out the nebula? 

David 

[ollypenrice]

The main star and reflection nebula are very bright. It's the surrounding dust that is normally difficult, so I don't know what to suggest.

Olly

[ArmyAirForce]

This is a three minute exposure, ISO 800 from a very light polluted Washington, taken in late September with a SW 200PDS scope. Even on this three minute shot, you can see the centre part of the nebula.

[dark star]

I guess through inexperience I was expecting to much from one exposure. Now I understand it looks like a fuzzy star I will try again!

David

[dark star]

I guess through inexperience I was expecting to much from one exposure. Now I understand it looks like a fuzzy star I will try again!

David

[ArmyAirForce]

This was 3 hours 45 mins of 3 min ISO 800 exposures. At that time of the year, the camera was getting too hot going any longer and noise got really bad.

[AstroAndy]

The name of the game is taking lots of exposures, collecting as much data as you can, and a shedload of darks, flats and bias (they say the law of diominishing return kicks in at 30 of them, but still worth taking as many as you can, 50-100), if you use DSS try super pixel mode and Median Kappa-Sigma Clipping for darks, flats and bias.