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Everything posted by TiffsAndAstro
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Results of 3 nights combined
TiffsAndAstro replied to TiffsAndAstro's topic in Getting Started With Imaging
This is really odd, as first step i do on the stacked outut file from dss is load it into graxpert and crop it. I guess ill have to have another go and make sure i appy the crop I had a look at how to subtract offsets but as i can't stack manually in siril, i don't think i can do that either. Before (if?) i learn to stack manually in siril AND apply 2048 offset, is it worth me continuing to add to this one target? -
Results of 3 nights combined
TiffsAndAstro replied to TiffsAndAstro's topic in Getting Started With Imaging
I had to stack in dss, as i couldn't get sirilic to fully finish due to it not being able to find .seq files. I can't stack manually in siril yet, i still haven't read through the documents explaining it. -
I can just about live with a green gradient but with a red one too, its tricky to process out.. hopefully ill improve. i've attached the post processed sum of all 3 nights, total of 5h22m integration time. Also a screen shot of the auto stretch view of the stacked file from DSS after a photometric colour calibration. I've overly post processed it again, but i think its the best i can do so far. I think i have the start of the dust lanes, but it could be my over processing. Would welcome any tips/advice or highlighting any problems. Focus and back focus seems ok. No obvious egg shaped stars, etc.
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What format are you saving it from graxpert in? What are software are you opening thatb saved file in?
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Doctor evil located
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result of two nights combined
TiffsAndAstro replied to TiffsAndAstro's topic in Getting Started With Imaging
well i added my third session from last night. it wasn't supposed to be clear but i went into garden at 11pm and saw stars. took me 43 mins to set up from scratch to pressing play on nina sequence. i stacked all 3 sessions in dss, red and green background even more prevalent, but i did a background extraction in nina on the starless portion and it got rid of most of it. I did a quick post process just now and (obviously) need to go back and stretch it a little less because the red noise is still there. But was also an experiment with generalised hyperbolic stretch. Whether all 3 sessions togther improve the image or not is almost impossible for me to be able to tell, especially after i post processed it though attached is a quick post process. stars are over stretch but still have some colour and still too much red banding but ill take my time with a better effort later. stars seem round even in the corners and i only cropped a little around the edges. -
1 I'm finding focusing my guide scope to be difficult. I can see them in PhD display and the clunky zwo app is as bad. Could I attempt it by changing focus and monitoring the hfr value? 2 no that's pic is after I sorted the wiring, and, as you observed, the blue usb is dragging it down. Will have a go later see if I can do as you suggest. At least somewhat anyway. 3 the mains cable has some red button thermal cutout. Not sure how Id protect it like you say except maybe a plastic bag didn't know to fully unwind it. Could be a trip hazard in dark though. Ty v much for all that feedback it's really appreciated. my guiding was ok, but a bit worse than last session - probably a combination of my guide focus and the dragging usb cable. Mount did do a proper meridian flip for the first time - i made the wait before/after values a bit more conservative. it loses me 10 mins of imaging time, but it seemed to work fine so im not changing that.
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result of two nights combined
TiffsAndAstro replied to TiffsAndAstro's topic in Getting Started With Imaging
So...I can stack two sessions in dss. So I can pretty much add more and more. Each sessions lights get a score. Are those scores relative to each sessions lights, or across them all? -
I don’t know what telescope I have
TiffsAndAstro replied to Replayy's topic in Getting Started General Help and Advice
I'm just thinking no harm in me practicing collimation if I come across something very cheap before buying something proper. -
Piecing together an imaging setup
TiffsAndAstro replied to MarkOw's topic in Getting Started With Imaging
I have an unmodded 600d with a sw 72ed and flattener. I linked couple of images taken with it below to give you an idea of it's potential. I'm certain I can get better results if I increase my total integration time for these 1 to 2 hours to 10+ and get better processing skills. At Xmas I had camera + tripod, then added mount, then Nina, then got main scope and guide cam. everything I *need" to image, but not everything I'd like -
There's a heart favourite option by each object listed as you search?
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This last pic in particular is really making me want to try this. At some point in distant future. Really nice image
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gimp + "stretched view" + "cloning"
TiffsAndAstro replied to TiffsAndAstro's topic in Getting Started With Imaging
Gonna have to read/research this a lot more, but it sounds like very good advice. When I keep my sky too dark it does look odd/oily as you say. -
Massive stars vs Medium size stars
TiffsAndAstro replied to Spacecake2's topic in Physics, Space Science and Theories
Your knowledge of this subject seems in Dire Straits. -
Well I failed with my idea of having two layers, one stretched by me as a guide layer but I'll try again later. I couldn't add two layers lol it kept replacing one. I think you're correct about the effect of cloning, I just wanted to try for myself and see. will update if I get it working in some way.
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i was hoping to clone over some areas in the starless output from starnet++ before stretching that same file. if i clone after i stretch, i will be cloning more noise. at least that's how i see it in my head i just want to try it out. im not sure how i'd find which bit to use to clone over other bits, before stretching in gimp, without that changable view option siril has (linear, auto stretch histogram etc). Its possible i can copy the initial layer to a new layer, stretch one as a guide for me on the unstretched layer? then delete the guide/stretched layer?
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ok this ties in with a lot of my thinking atm. perhaps in the future, when i need just a little improvement to beat hubble ( ) i maybe look at any minor tilt issue i have. guiding, ill have another go tonight, hopefully, and share a log, but i was hoping 0.18 (1.5) ish would be ok considering my pixel scale and my other gear. i'm using astro sharp in my 'work flow' now and it seems an improvement over not using any blur related software. i doubt its as good as blurxterminator though. also looking at my subs there were some plane trails in it. not sure if doing 3 minutes over 2 minute subs is a big advantage for me shooting in colour.
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Refractor + Barlow + dslr = planets?
TiffsAndAstro replied to TiffsAndAstro's topic in Getting Started With Imaging
yeah i agree, but before i do i need to make sure i buy the correct bits and peices that will work first time for my gear. jupiter is visible for a little while after dark from where i am, but for now im gonna try and concentrate on maximising hours on something. Until june ish, when i think stellarium is telling me m31 is back. ngc4889 "thousand galaxies" is interesting atm. who wouldn't want a pic containing 1000 galaxies?