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Old 26-07-2022, 08:27 AM
Tropo-Bob (Bob)
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80mm F6 Prime Focus

After 50+ years of observing, I have only recently become interested in Astrophotography.

I know next-to-nothing about stacking, stitching, blanks etc. Nevertheless, I am just amazed at what a mirror-less camera can take for a few seconds at prime focus and how well the results are. We are truly living in the future, or so it seems to a retiree like me.

I wanted to try for the Comet last night, but the clouds just would not give me the break I wanted. So I took these instead.

Taken with an 80mm F6 triplet and a contrast booster filter. There was no field flattener and there has been no further processing of the image beyond shedding resolution to meet the 500k per picture requirement.

Images: NGC 3766 in Centaurus, Omega Centauri and M57 (Ring Nebula).
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  #2  
Old 26-07-2022, 08:57 AM
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xelasnave
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You are a natural..excellent work.

Do yourself a big favour ..download Deep Sky Stacker..it is free and simple to use and all of a sudden 30 second captures seem to be the way to go..take a 100 or more check to make sure each one is near perfect and stack them....the results will surprise you.
alex
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  #3  
Old 26-07-2022, 09:03 AM
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Tinderboxsky (Steve)
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Great shots, Bob.
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  #4  
Old 26-07-2022, 05:55 PM
carlstronomy (Carl)
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Nice work, welcome to the club
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  #5  
Old 26-07-2022, 08:21 PM
Tropo-Bob (Bob)
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Thanks very much guys,

I received a Baader 475nm filter today, so I took an image of sunset. The filter is said to be a light blue, but as U probably realise, 475nm is fairly close to green.

So the greenish image is the original and I also ran a 'Slate' filter over it and that give the black & white effect.

Some sunspots are visible.

The images has been cropped and off course, I also used a full aperture solar filter.
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  #6  
Old 26-07-2022, 08:32 PM
Startrek (Martin)
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Bob,
Those images are excellent
Well done !
Gee observing for over 50 years and only now getting into Astrophotography, you’ve started at a great time in this part of Amateur Astronomy as current technology has enabled imagers to produce mind boggling photos with just basic equipment.
Just a humble 6” Newt , a HEQ5 mount and an old Canon DSLR can produce fantastic images for under $3K ( that’s what I started with )
Looking forward to seeing your future images
Oh and Alex is spot on , Deep Sky Stacker is tremendous free software to stack your frames ( don’t use it for post processing its not really designed for that )
Cheers
Martin
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  #7  
Old 26-07-2022, 10:02 PM
Averton (P and C)
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Quote:
Originally Posted by Tropo-Bob View Post
Thanks very much guys,

I received a Baader 475nm filter today, so I took an image of sunset. The filter is said to be a light blue, but as U probably realise, 475nm is fairly close to green.

So the greenish image is the original and I also ran a 'Slate' filter over it and that give the black & white effect.

Some sunspots are visible.

The images has been cropped and off course, I also used a full aperture solar filter.

Wow, that's a very effective shot Bob.
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  #8  
Old 26-07-2022, 10:02 PM
Averton (P and C)
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Quote:
Originally Posted by Tropo-Bob View Post
After 50+ years of observing, I have only recently become interested in Astrophotography.

I know next-to-nothing about stacking, stitching, blanks etc. Nevertheless, I am just amazed at what a mirror-less camera can take for a few seconds at prime focus and how well the results are. We are truly living in the future, or so it seems to a retiree like me.

I wanted to try for the Comet last night, but the clouds just would not give me the break I wanted. So I took these instead.

Taken with an 80mm F6 triplet and a contrast booster filter. There was no field flattener and there has been no further processing of the image beyond shedding resolution to meet the 500k per picture requirement.

Images: NGC 3766 in Centaurus, Omega Centauri and M57 (Ring Nebula).

Nice images Bob!
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  #9  
Old 29-07-2022, 08:17 AM
Tropo-Bob (Bob)
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Taken this morning. My tracking still needs a little fine tuning.

Clare & Peter; Thanks for your kind remarks.
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  #10  
Old 29-07-2022, 09:08 AM
LonelySpoon (Neville)
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You are off to a great start, Bob!

Neville
LSO
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  #11  
Old 29-07-2022, 10:38 PM
Averton (P and C)
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Quote:
Originally Posted by Tropo-Bob View Post
Taken this morning. My tracking still needs a little fine tuning.

Clare & Peter; Thanks for your kind remarks.

Another fine image Bob
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  #12  
Old 05-08-2022, 12:01 PM
Tropo-Bob (Bob)
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I imaged 9th magnitude Pallas this morning. Pallas is currently near Rigel and is moving close to the Orion Nebula.

I imaged this field a few days previously and found the interloper in this morning image.

I did strike problems with this. Although the image were taken under difficult conditions with clouds and the sky having developed a shade of pink before the clouds cleared enough for my shots; this was not the problem.

When I came to process the images, they were way, way too large for me to reduce the entire image down to an acceptable number of bits for display. I do not understand why. I ended up cropping the image and that now only shows a small part of my original photo.

I have much to learn ...
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  #13  
Old 08-08-2022, 08:39 AM
Tropo-Bob (Bob)
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I now understand why the previous photos were so large: I had the ISO too high and this adds to the noise/grain, which then adds to the size of the image.
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  #14  
Old 08-08-2022, 08:44 AM
Tropo-Bob (Bob)
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A photo of M41 that I took this morning just as the lower sky was turning a shade of pink.

I have a UV/IR cutoff filter on order. I assume that this will help reduce bloating in the size of the stars.
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