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Everything posted by AstroMuni
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Astrophotography Laptop Specs...
AstroMuni replied to Ian McCallum's topic in Getting Started With Imaging
I use ZWO cameras as well and primarily capture DSOs. My laptop is an old i3 with 3GB RAM and 256GB HDD running Linux Mint. I also use an RPi as it gives me the luxury of being able to sit inside my house on laptop without having to run wires to scope etc. The RPi runs the INDI server and drivers and comes with 2 USB3 ports + 2 USB2 ports. I changed to Linux when my laptop was struggling to run windows 7, 8 and I couldnt be bothered to buy a new laptop. Ref long exposure times most of the hardwork is being done by the camera and it only calls upon computer resources when it saves the files. I tend to use a combination of 30s and 120s exposures as my camera is just a good old uncooled ASI224mc and I figured out that light pollution in my area anyway contributes a lot, so I can get away with short 30s exposures. See the video by Robin Glover on optimum exposure. -
Can you recommend a good UV/IR cut filter for planetary?
AstroMuni replied to StuartT's topic in Getting Started With Imaging
Have you considered the filter from ZWO? I use that with my ASI224mc -
Awesome picture. So many galaxies in one shot
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You are correct, but its a bit deeper than that. So its referring to the location of INDI server which then looks for local or remote device drivers. So you could potentially have the INDI server running on the RPi but the devices connected to another machine, in which case you would specify the location of the drivers in the Remote text box in Profile editor. @Ian McCallum if you hover over the the Local or Remote buttons you should see a popup with help.
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Beautiful sights 👍
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I give up - skywatcher 9x50 raci finder
AstroMuni replied to Starslayer's topic in Getting Started Equipment Help and Advice
Absolutely agree. I remember trying to figure out how to read the SW polarscope as my manual shows the constellation view whereas the scope has a clockface -
Here is my poorer cousin image of same object taken over 2 nights in Jan. Taken using the ASI224mc attached to the Celestron 130 scope on a EQ5 pro mount.
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Great image. How many exposures is this? EDIT: Ignore Saw the info on the image
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ASI294MM Dark frames quality measurement
AstroMuni replied to barbulo's topic in Getting Started With Imaging
I have searched on the internet for examples of amp glow from ASI294 and all show just one spot from which amp glow is emanating. So worth checking that the rest are from camera or stray light. -
ASI294MM Dark frames quality measurement
AstroMuni replied to barbulo's topic in Getting Started With Imaging
Thats quite a few amp glow areas on the Master. Generally I have seen only one and its fuzzy not having starry lines. Perhaps someone with more experience of your camera can comment -
Focusing the ZWO mini guide scope
AstroMuni replied to Astro_mark_c's topic in Getting Started Equipment Help and Advice
If its anything like my Astro Essentials one you need to unscrew a lot before you achieve focus. 12cm is measured from the rear surface of the lens system in the front, so can be a bit tricky to figure out true distance. -
From your description it sounds like the effect of air turbulence as mentioned by others. And as you view stars such as Sirius, these are quite low near the horizon at the moment, so turbulence will be higher. And if its skirting above nearby rooftops that doesnt help either as the rooftops are giving off heatwaves. If you could see faint rings in the view then its a case of poor focus. Good luck with your new found interest. Your local club should help a lot.
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Focusing the ZWO mini guide scope
AstroMuni replied to Astro_mark_c's topic in Getting Started Equipment Help and Advice
What is the spec of this? Presuming we are seeing the rear end of a guidescope? -
New Sliding Roof Mini Garden Observatory Build
AstroMuni replied to Domain105's topic in DIY Observatories
Great looking images. Just a tad too reddish for my taste though 🙂 What tools are you using to post process the images?- 70 replies
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Summary / comparison of image processing software?
AstroMuni replied to astrojon77's topic in Discussions - Software
A few features I like in Siril: (as we speak its with ref to v1.0.0-rc2) - Photometric calibration - Background gradient removal - Pixel math is new and has some great possibilities (havent tried in anger yet) - Easy to combine multiple nights sessions (even if they have different calibration frames) using Sirilic - Very active developers Features lacking: - masking - star removal - noise reduction (only median filter is available) -
Summary / comparison of image processing software?
AstroMuni replied to astrojon77's topic in Discussions - Software
And in Siril you can get it to remove gradients on every image in the stack before stacking as well. This can help in certain cases. -
Summary / comparison of image processing software?
AstroMuni replied to astrojon77's topic in Discussions - Software
You certainly can, but paid tools like PS have more functionality in that area. -
Summary / comparison of image processing software?
AstroMuni replied to astrojon77's topic in Discussions - Software
It does have both Asinh and Histogram stretching tools. Asinh preserves colours better. But it does NOT allow you to do curve adjustments by individual channel -
Problems using SiriL IC for stacking
AstroMuni replied to barbulo's topic in Imaging - Image Processing, Help and Techniques
Any luck? -
Problems using SiriL IC for stacking
AstroMuni replied to barbulo's topic in Imaging - Image Processing, Help and Techniques
Then check the log tab and see if it there are any errors showing up. -
Problems using SiriL IC for stacking
AstroMuni replied to barbulo's topic in Imaging - Image Processing, Help and Techniques
What is the setting for CFA under Global properties? I have mine ticked to equalise CFA -
Problems using SiriL IC for stacking
AstroMuni replied to barbulo's topic in Imaging - Image Processing, Help and Techniques
Let me see the parameters i use. Simple check would be to take a look at script generated by sirilic and compare with OSC_Preprocessing_Withoutdark one. The sirilic script can be viewed under Actions menu. Suspect its something to do with registration as first image looks all over the place. EDIT: My parameters look similar to yours. I do use Darks but dont use Bias. -
Horsehead and flame nebulae
AstroMuni replied to Astro Noodles's topic in Getting Started With Imaging
Its a lovely image I would be proud of. As @vlaiv mentioned there is a fair bit of signal + noise I have cropped the image and used Siril to do a photometric calibration. Here is the output. -
Astrophotography Laptop Specs...
AstroMuni replied to Ian McCallum's topic in Getting Started With Imaging
Your choice of DSO vs planetary is also dictated by your scope. For planetary you need higher magnifications to get closeup views whereas for DSO you can get by with widefield. EDIT: saw that you use SW 120 refractor. You should get pretty good images of DSOs. If you use a computer to drive your mount then it would make your life easier. Take a look at the RPi as well. Thats a cheap option which delivers great results. I use a combination of laptop + Rpi and Ekos is a great software. -
Thats a beautiful image. What is the duration of subs?