geordie85

Very true. I have been ending up with very similar results each time, but I'm really enjoying finally having some data to play with.

Thanks. I've lost count of how many times I've reprocessed this data, and I'm still playing with it.

I made so many mistakes whilst capturing this data from not checking focus, plugging the lead into the wrong slot on my filter wheel to forgetting to click start on APT. But after all the silly little mistakes i made i ended up with 15 x 300 Ha subs, 11 x 300 S11 subs and only 7 usable 300 O111 subs. And here is the end result

You could always give Terry at starlight Xpress an email for advice. When I crushed my filter wheel against my mount they fixed it free of charge

Yep. I can resist anything except temptation. But I was still good

I'd love to shoot this one day. Can't get to it from my garden. The lowest I can get to is M16 whichj I've been collecting data on the past 2 nights. Hoping to add a 3rd to it tonight.

I never do this but due to a discussion in another thread, I've raised my neq6 to make sure my Star71 can point at M16 aswell as my flt98.

Thats what I was hoping for too.

This is very true. I do have the OSC version of this camera as well. I may do a comparison shot at some point.

And no astro darkness. This target only just cleared the neighbours fence. So much so that my 2nd scope was blocked by it. Thanks. I cannot see this being done with a OSC camera in 3 subs.

That's fine. I knew I could push the data further, but I don't like how grainy its looking. At a distance it looks fine, but at full resolution, not so good

Thanks. It was taken with my qhy183m and flt98 and 0.8x Reducer which gives a focal length of 494.

The ha filter really helps to keep stars tight. Thanks. Thanks. More data is definitely going to collected when and if I can.

Here is a very short first light with my QHY183M and Astronomik filters i picked up yesterday. My original plan was M16 in Ha for as long as the clouds stayed away but when framing i noticed i could make it out in 5 second exposures, so i decided to shoot 30 seconds in ha, o111 and s11 for the 30 second unguided challenge which can be found here. I also shot 7 subs of 300 seconds to see how well this camera performs and added it to the "colour" version in the linked thread.

Here is M16 in "Hubble Palette" consisting of 1 x 30 second sub in ha, o111 and s11. I was quite surprised how this turned out considering its only 3 single subs.

I tried this target tonight and with my mount on the far north side of my garden, I only just managed to get it into the FOV. Well done on a very low target and without astro darkness or cooling.

Thanks I'll be sure to send them an email. Is it the serial numbers that are on these boxes?

Hi I've just bought a set of astronomik narrowband filters. Whilst in negotiations with the seller I asked what nanometer they were. He said he things the ha is 7nm but doesn't know about the O111 or S11. Is there a way I can find out what nm these filters are? There's nothing on the side of the filter or on the boxes they came in.

Used Narrowband set

http://astropixels.com/main/polaralignment.html

Have you tried dirft alignment?

That's the same set up I started with. I found polar alignment is critical and the balance needs to be offset to east heavy slightly. You'll still be restricted to shorter exposures due to the weight. Also the 200p is a very big scope and catches any breeze very easily, which will also be affecting your subs.

I'm assuming this is an uncooled camera? If so then yes this is normal. Also that's not light leakage, that's amp glow.

Exactly that. They're the same as darks, but to match your flats instead of your lights

It looks like your flats are over correcting. Did you calibrate them with dark flats too? You could also try lowering the ADU to around 18000. That's what I use but with a qhy183m