dodgerroger

HU11 that’s my postcode 😃

Yeah phd 2. Thanks, I’ve been imaging for 3 years and never fully understood which number to take notice of.

Ah thanks, yes it has the correct focal length and guide camera pixel size. Another daft question but which numbers do you go by, the number in brackets or the first number?

I moved to Nina from apt before the latter had the autofocus capability. I won’t go back now it is excellent. I am still using version 1.10 as I found the nightly builds a bug fest. 
 

Hi folks, I’m sure this is a simple question for many people. How do I convert total rms error from my phd graph to meaningful error in arc seconds? Thus allowing me to compare it to the imaging cam imaging scale. Thank you 

I don’t think so, I started with a 72ED with the same camera and have progressed to a GT71. It was still the same. I thought it might be over saturation and or the high pixel count that is causing it. I found it annoying as it is very difficult to determine correct focus 

If I recall, the spikes looked straight when checked with my nb filters but with rgb filters the spikes would look wonky. 

I had the exact same issue with my 183mm although it is a Altair camera. I never got to the bottom of it and now use an electronic focuser. 

He has had my mount for 15 weeks now. Emails rarely answered, managed to speak with him 3 weeks ago and was told my mount was ready and just needed testing. I sent an email a couple of days ago asking for an update and no reply. Why advertise 4/5 turn around when he must know this won’t happen. I’ll be ringing tomorrow and if I don’t get answer I’ll be requesting a refund. I hope his work is better than the customer service. 

your Sii data looks very good. What is the outcome with the scratches?

😲very poor quality control from Baader.

Look forward to the results. How long are your exposures and setup?

Thanks I am about to purchase a new Oiii filter, my current cheap filter gives huge halos. I can’t decide between the 3.5 or the 6. 

4 hours ago, tooth_dr said:

Comparison from last night - wasnt totally clear so not ideal (patchy cloud) and i've a bit of fettling to do with the spacing and tilt but interested to hear what you all think?  Going to try Oiii this evening as that would be a good test of haloes.

 

Which filter is this?

Hi folks, I see there is a lot of discussion on here regarding different manufactures of filter but my question is are the new 3.5 nm filters worth the extra £££££ over the cheaper 6nm filters? I am looking to upgrade my cheap Oiii filter which is giving very bad halos. 

Thanks

I was just checking my images, it’s the first time I’ve used fits lib and thought oh why is it showing clipped pixels. I was looking at the linear histogram and thinking the offset is set to low. It has come about from trying different exposures and gains and want to make sure I have enough offset when I start changing gain values

Thanks for that, it is a raw image. I will check the associated dark subs I have taken. What should the background level be set to? I think fit lib is on default settings 

Not sure how they would handle been outside with dew etc. 

There is plenty to choose from I am currently imaging the spider nebula IC417. Well not this week as I have a week of clouds forecast 

Hi folks, please help. I am experimenting with fits liberator to find the correct offset for my camera. This is a screen shot of an image using the default gain and offset. The blue dots as i understand it are showing the clipped black pixels.So am i correct in thinking I need a higher offset? I believe i do especially when looking at the histogram. Could someone with experience of this confirm.  Thanks in advance

Last year I upgraded from dslr to a dedicated camera. After a lot of head scratching I went to mono, namely a 183mm. It has brought my imaging on in great leaps although I am still learning. One of my iterating habits with my dslr was image hopping. I would end up with loads of different targets on my pc with little data on each target and not a great deal to show for it. Mono has forced me to pick a target and stick with it over several nights to collect a good amount of data, which in turn I now spend more time processing that one image. I bought some narrowband filters as well which has been great fun

Yes I think they can give bloated stars, what make of filter are you using? 

I can’t really comment on suggestions to the above as I am a mere beginner with pixinsight but have you tried stacking your images in a different program, APP or DSS. See if you get the same results. This will narrow it down to your issue 

There are many like it but this is my Elephant trunk, looks more like a ghostly figure to me though. Shot with AA183MM, SW72ED and processed in pixinsight. Please feel free to give me any pointers for improving this image, all greatly received.

Cracking image, very nice