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geordie85 last won the day on December 9 2015
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Is anyone using Antlia 1.25 Pro NB filters in a ZWO EFW?
geordie85 replied to Andyb90's topic in Getting Started With Imaging
I'm not sure about the Antlia brand but with my astrodon filters they will fit, but I have to turn the faceplate round. Still works perfectly fine. -
geordie85 started following SGL 2022 Challenge 3 - Galaxy Clusters , What was wandering through the Leo Triplet? , Out of focus stars across the FOV and 1 other
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Out of focus stars across the FOV
geordie85 replied to Astropedro's topic in Getting Started With Imaging
It's always nice when things finally start working like they're supposed to. -
Flats not working. All out of ideas
geordie85 replied to geordie85's topic in Getting Started With Imaging
Don't be. You didn't do it haha. To be fair before I started I swapped my camera from my samyang to my scope. I should have given it a clean before hand. I've now taken the whole thing apart, cleaned the sensor window, filters, flattener and lens. I'll run some new flats when I've got the time and hopefully there'll be no moving dust bunny. I assume it was moving since flats wouldn't take care of it. It's just a shame I've lost so much data. Once again thanks for all the advice. -
Out of focus stars across the FOV
geordie85 replied to Astropedro's topic in Getting Started With Imaging
You're welcome. Hopefully all will work out well for you. Just making sure I'm clear, my 50mm is from camera body to flattener, not camera sensor. Don't want you having more troubles because of me being unclear. -
Flats not working. All out of ideas
geordie85 replied to geordie85's topic in Getting Started With Imaging
Thanks. It seems that no matter what, my data cannot be calibrated with the flats I'm taking so I'm going to cut my losses and disassemble the entire rig, give it a good cleaning and hope for some more clear nights again soon. Thanks all for the advice and suggestions. -
Out of focus stars across the FOV
geordie85 replied to Astropedro's topic in Getting Started With Imaging
Not sure if this will help but as I use the same camera and filter wheel I thought I'd try and offer a possible solution. From the end of the flattener to the camera body I have around 50mm distance and my stars are nice. My imaging train goes scope, flattener, M48 to t2 adapter, 21mm spacer, filter wheel, camera. What distance do you have from camera to flattener? From the image you've posted I wouldn't say your stars are out of focus, just alot of coma. -
Flats not working. All out of ideas
geordie85 replied to geordie85's topic in Getting Started With Imaging
That it is. I'm usually pretty good at figuring these problems out but this time I'm beat. Hence asking the collective here. Strange thing is on my last night I took flats at the beginning and at the end of my imaging session and the data collected that night has the same issue. So it cannot be a moving dust bunny -
Flats not working. All out of ideas
geordie85 replied to geordie85's topic in Getting Started With Imaging
Flats were taken both at night and during the day. If memory serves right the above flat was taken at night, but I'm not 100% sure. I'll upload one I know I took at night when I get home. What sort of filter issue could cause this? Unfortunately no I don't. I have flicked through them all in DSS though and it appears to be in the same place in all my subs. -
Flats not working. All out of ideas
geordie85 replied to geordie85's topic in Getting Started With Imaging
The stacked image is 196 lights taken over 2 nights. It's the same even if I just stack 1 nights worth of data. -
Flats not working. All out of ideas
geordie85 replied to geordie85's topic in Getting Started With Imaging
My main problem is there is 1 massive dust bunny that always over corrects and the background is horrible. I've not got round to processing as i don't see the point if my flats aren't working correctly. After stacking Astroart shows an auto stretched image and its always there. I've also just stacked in Astro Pixel Processor and still getting the same thing. Here is an auto stretch from Astro Pixel Processor so you can see what i mean (i'm not bothered about the edge difference as i would crop beore any proper processing). Saved at JPEG at 100% quality for here. Also attached is a single flat frame -
Flats not working. All out of ideas
geordie85 replied to geordie85's topic in Getting Started With Imaging
Exactly, that's why I'm stumped. I've never had a problem before, even with short exposures. I will do in a couple of hours when I'm home -
Since this lovely clear spell has ended I finally ran some new flats, but the problem is they're over correcting and I've tried everything I can think of. I took them exactly the same way as I have always done but this time they're not working, so I have alot of data I can't use. I use a zwo 183mm, astrodon LRGB gen 2 filters, Esprit 100 with matching flattener and a dimmable tracing pad and white paper. So far I've tried ADU 30000 taken at 0.5 seconds, 1.17 seconds and 2.5 seconds with a 5 second delay between subs. ADU 22000 0.5 and 1.4 seconds again with a 5 second delay and all are temperature matched to my lights. I've tried using different amounts between 30 and 100. All with matching dark flats and the correct darks for my lights. Tried stacking in astroart 7 and in DSS. Also tried average and sigma in astroart. I set my scope up and left it out in the same place the entire time I was imaging and covered up during the daytime. I'm stumped and don't want to throw away so much data. Any more ideas anyone?
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Very nice for the small amount of subs I've been collecting data on this the past couple of nights myself but like you, my skies haven't been great
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