Can you start making some smaller RC’s😀Thanks for the suggestion. One of the problems is how sensitive the CMOS cameras are. It is very easy to blow out stars. With my FSQ at f/5 I can’t shoot over 2

So, would you say the new advantages of the small pixel CMOS cameras is that they bring high sensitivity to small pixels? I also got a shot of the Running Man with the 1600mm setup: https://pbase.com/

Thanks Roland. My last dark sky outing was my first use of this scope and camera. I am really confused on the whole image scale question. I bought this camera because it has the largest pixels of any

I got another shot of M 81 on the same trip as the M81-82 image, this time at f/8 1620mm. https://pbase.com/image/170419535 Robert Chozick rchozick@...

Thanks Michael. I use a bahtinov mask and just occasionally refocus on a bright star I am a software minimalist. I only use Nebulosity and PHD. What is interesting is that with the carbon fiber tube o

Thanks Stuart. Robert

Thanks Roland. I saw a few slight football shapes in the image but looking back I am wondering if those are actually double stars stacked on top of each other. Robert

Thanks. I looked at your website. You have some pretty amazing work there. Robert

I just started using an 8 inch RC and tried the CCDT67 on it. I spaced it for 67% bringing the f/8 1620mm scope to F/5.3 1075mm. I really like it and it ends up acting as a flattener to some degree. M

Beautiful images. Great job processing. Robert

Thanks Don. I have shot the Crescent a few times and always have trouble with it. It needs a lot of exposure and I have never given it near enough time. All my images are on the following: https://pba

Ok, so I took your comments to heart and modified it. I had actually combined parts of 3 versions to make this one. So I made a new version and brought in the nebulosity from the original version to k

I am glad you mentioned the astronomy tools. I forgot I had them already and have not used them for years. I am going to play with them. I live in large city light pollution also. My dark sky site is

Thanks Don. I see you applied more min filter to reduce the stars and darkened the background. While it made the nebulosity jump more I look at a balance of highlighting the object and trying to make

Thanks Stuart. Robert

Thanks. I played with that and it does eliminate the overall brightness of some of the nebulosity. Calibrated monitors still vary some so we may not be seeing it the same.

This is my first mosaic. It is really hard to get the backgrounds the same. This was a lot work. This is with my new ZWO CMOS OSC camera. https://pbase.com/rchozick/image/170099599 Robert Chozick rcho

That is cool that you can add images so easily

Ty, you can always buy a used 900 or Mach1. I think the 900 or 1100 are much more portable than the Mach 1. I have trouble lifting a Mach 1 whereas the split pieces of the 900 or 1100 are each lighter

I did some research and talked to my friend about it. I think the issue is that bias in a CMOS is more variable than in a CCD. I saw a graph, shown below, that shows you need at least a .3 sec exposur