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Old Scopes and Modern Imaging

ccd classic equipment imaging
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1137 replies to this topic

#901 LukaszLu

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Posted 06 August 2022 - 04:37 PM

epic :-)


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#902 Borodog

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Posted 06 August 2022 - 05:48 PM

epic :-)

Thank you, Lukasz. As I mentioned in the LOI thread, I am really dreading trying to tune out the sensor tilt. I may put it off until I have an entirely threaded optical train to work with.



#903 LukaszLu

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Posted 06 August 2022 - 06:40 PM

What do you mean by sensor tilt? I read your description in the lunar section, but I don't quite understand what happened ...?



#904 Borodog

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Posted 06 August 2022 - 08:42 PM

The sensor is not perpendicular to the optical axis.



#905 LukaszLu

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Posted 07 August 2022 - 01:38 PM

I understand that - but how did it happen? Has it moved inside the camera ??


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#906 Borodog

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Posted 07 August 2022 - 09:46 PM

I understand that - but how did it happen? Has it moved inside the camera ??

The camera has always had moderate sensor tilt as reported by ASTAP. In some images it is worse than others. In this particular image I had installed a tilt adjuster but have not had time to adjust it yet, and it seemed to have made the tilt worse. Although, it occurred to me afterward that I had set my backspacing incorrectly, it having been months since I've imaged with the scope, and that may have made the sensitivity to the sensor tilt worse. In any event, I am in the process of replacing the image train with all threaded connections. After that It will have more confidence that everything is rock solid before adjusting the tilt.


Edited by Borodog, 08 August 2022 - 09:03 AM.


#907 LukaszLu

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Posted 08 August 2022 - 07:53 AM

Honestly, I did not know that the camera could have this type of drawback. In the case of a high-resolution camera - like yours - it probably takes its toll much more than in the case of smaller sensors...



#908 Borodog

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Posted 09 August 2022 - 01:48 PM

Moonkiller in better form last night. Click for the 31 Mpixel version on Astrobin.

 

gallery_346195_16100_478579.jpg


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#909 LukaszLu

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Posted 10 August 2022 - 05:57 AM

It's always good to check if Vallis Alpes and Plato craterlets are in place :-)


Edited by LukaszLu, 10 August 2022 - 03:10 PM.


#910 MiraS

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Posted 14 August 2022 - 01:50 PM

Hello,
 
Just some pictures from yesterday night in germany made with my Vixen NP 80L with single motor drive for the New Polaris and ZWO ASI290MM as the camera. Also a Baader UV/IR Cut and yellow filter #8.
Just stacked in Autostakkert and sharpened with Giotto.
 
Ganymed on top left side:
Jupiter Vixen NP 80L
 
Saturn Vixen NP 80L
 
Moon Vixen NP 80L
 
Moon Vixen NP 80L
 
Moon Vixen NP 80L

 

Hope you like them.

Mira


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#911 tim53

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Posted 26 August 2022 - 01:10 AM

Finally got my mgen 3 playing well with my sitech controller on the em-500 mount. Here’s a cropped 1 minute image take. With my Olympus em5ii through the televue renaissance 102mm f/8.8 apo. 
 

more tomorrow night!  

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  • 95BD4AB5-7358-4EFD-9571-3E235F725229.jpeg

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#912 tim53

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Posted 27 August 2022 - 12:19 PM

This isn't quite fair, to be sure, because my C-9.25" isn't old enough to be a true Classic, but here's M13 again with my newer Panasonic Lumix S5, with the MGEN guiding via the 135mm lens.  The Lumix (and many other cameras, I suppose) has a nifty "Live Composite" mode that takes a continuous sequence of exposures that it then stacks in camera for things like "light painting" and star trails.  Before the sequence, it automatically takes a dark frame that it then subtracts from the subsequent frames.  I tried using this for my astrophotos last night, figuring that the frames would just stack on top of one another and maybe improve signal somewhat.  But I think the mirror was moving in the 9.25", or there was differential flexure between the scope and the guider (which is mounted on the 9.25"), because the two composites I took (one was ten 60" exposures, the other two) had trailing in them, though the MGEN was indicating guiding errors of about a half arc second.  But what really surprised me was that if I stopped the "composite" sequence after the dark and one frame were taken, the noise was surprisingly low.

 

I've got an SCT crayford focuser I can use tonight, and approach focus of the primary by turning the knob in one direction only so as to "push" the mirror up against gravity, and leave it there, only fine-focusing with the crayford.

 

So here's M13 again, through the 9.25" with the Panasonic Lumix S5 set to 1600 ISO and 60" exposure (cropped).

Attached Thumbnails

  • M13_1min_LumixS5_C925_crop.jpg

Edited by tim53, 27 August 2022 - 12:22 PM.

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#913 tim53

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Posted 27 August 2022 - 12:29 PM

And here's the ring (same everything else):

 

 

Attached Thumbnails

  • M57_1min_LumixS5_C925_crop.jpg

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#914 ETXer

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Posted 10 September 2022 - 09:29 AM

Last night, despite the rising full Moon, was a great session with my circa-1998 Celestar 8 Deluxe using the Revolution Imager 2 camera and DVR. Each image was a 10 or 15-second AVI video file that was then pre-processed using PIPP, then aligned, stacked and wavelets applied in Registax 6, then minor PS adjustments.

 

M2:

 

gallery_86392_14953_15079.jpg

 

M15:

 

gallery_86392_14953_12368.jpg

 

and M27:

 

gallery_86392_14953_61528.jpg

 

The full observing report can be found here.

 

Cheers, Allan


Edited by ETXer, 10 September 2022 - 09:31 AM.

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#915 Sky King

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Posted 25 September 2022 - 05:08 PM

Tasco 9VR - made by Vixen

60mm, F5, 300mm fl. - Asi533MC Pro - Optolong L'Extreme filter

 

SH2-108, The star Sadr (γ Cyg37 Cyg) and

NGC 6910      20x 120sec

 

 

 SH2_108.jpg


Edited by Sky King, 25 September 2022 - 05:32 PM.

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#916 MiraS

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Posted 26 September 2022 - 01:57 PM

Tried out imaging M57 with a long achromatic refractor.

Same mount as last time, Vixen New Polaris with single drive but with a Carton CST-80KU (80 / 1000mm).

Around 7520 pictures with 0.5 sec exposure stacked in Siril and just a bit sharpened in Fitswork (only the nebula).

Imaging camera was a ZWO ASI290MM with Baader UV/IR and a cheap #8 yellow filter.

The Carton is sharp and contrast is great, even without any coatings at all.

Click on the image to enlarge..

 

M57 with Carton 80 f12,5 achromatic refractor
 
Picture is from my last visual use:
Carton CST-80KU on Vixen New Polaris

 

Mira

 

 


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#917 tim53

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Posted 26 September 2022 - 02:11 PM

Impressive!



#918 highfnum

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Posted 28 September 2022 - 02:00 PM

meade ds10 with NV bi-ocular lens and S8 phone

stuff around orion

horsej-Dese.jpg

 

flamej-Dese.jpg

 

roseBPj-Dese.jpg


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#919 TSSClay

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Posted 29 September 2022 - 07:19 AM

I was up at the "Great Lakes Stargaze" in Gladwin Michigan last weekend.  I took my Televue Genesis F5 (early) refractor and had a very clear night to try some astrophotography with it.  Managed four hours on the Heart nebula.  The scope has some minor violet halos as it is an achromat but they were pretty easy to deal with - reminded me of shooting film!!

 

1805-9-22-try1 small.jpg

 

I hope I get a chance to shoot through this scope more often!

 

Clay


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#920 ETXer

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Posted 12 October 2022 - 03:56 PM

Got a chance to capture Jupiter at it's closest opposition since 1963 with my 1998-Celestron Celestar 8 Deluxe and a vintage Celestron Ultima SV-Series 2x Barlow with a humble ZWO ASI120MC (and a Windows Vista laptop!). The bad news was less-than average seeing and the planet was still not at a high point in the sky, but I'll take what I can get.

 

Best of 1084 frames, AS!2, Registax 6

 

The setup:

 

52423958938_23e8bc5556.jpg

 

And the result:

 

52423849630_cacbc423ba.jpg

 

Cheers, Allan

 

P.S. Here's the observing report.


Edited by ETXer, 12 October 2022 - 07:55 PM.

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#921 jragsdale

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Posted 12 October 2022 - 10:33 PM

First light with a new to me Jaegers 6" f/5 (lens dated 4/77). Deployed it tonight with an NV setup comprised of the TeleVue 55mm plossl with 67mm converter. Antlia 3nm H-Alpha filter and a PVS-14 white phosphor NV unit. 

 

Bufferfly Nebula in Cygnus, 2 second cell phone shot, edited in phone.

 

I'm quite excited at this combination!

Attached Thumbnails

  • 20221012_205746_copy_1431x1771.jpg

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#922 LukaszLu

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Posted 13 October 2022 - 05:31 AM

Got a chance to capture Jupiter at it's closest opposition since 1963 with my 1998-Celestron Celestar 8 Deluxe and a vintage Celestron Ultima SV-Series 2x Barlow with a humble ZWO ASI120MC (and a Windows Vista laptop!). The bad news was less-than average seeing and the planet was still not at a high point in the sky, but I'll take what I can get.

 

Best of 1084 frames, AS!2, Registax 6

Hi Allan, nice shot, however you seem to have exceeded the ~3-minute limit which avoids the blur effect of the detail due to Jupiter's fast rotation. Unfortunately, this limits the possibility of collecting more frames and obtaining a more precise and less noisy image - but there is nothing you can do about it. Personally, I stick to this limit even with Mars, which rotates twice as slowly.


Edited by LukaszLu, 13 October 2022 - 05:32 AM.

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#923 ETXer

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Posted 13 October 2022 - 07:41 AM

Hi Allan, nice shot, however you seem to have exceeded the ~3-minute limit which avoids the blur effect of the detail due to Jupiter's fast rotation. Unfortunately, this limits the possibility of collecting more frames and obtaining a more precise and less noisy image - but there is nothing you can do about it. Personally, I stick to this limit even with Mars, which rotates twice as slowly.

Thanks Lukas. The capture time was actually only 90 seconds, I think any blur present was due to the seeing. Jupiter was still a bit low in the sky, only about 4 hours after its rising which made it even worse. I couldn't wait for later with an early wakeup the next morning... in any case it was an awesome visual experience and I have a nice "souvenir" of the opposition!


Edited by ETXer, 13 October 2022 - 07:44 AM.


#924 Uranotopia

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Posted 15 October 2022 - 06:12 AM

I've just found this topic... unfortunately haven't seen it before...

I show planetary imaging through my Tasco 102M of early 80s, AVI taken with not so young and not too old  DMK 21AU618. The images I made in 2020.

 

 

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  • R-RGB neu 2020-07-31-2116_5_R2020-07-31-2117_g2 Text.png
  • Sat 23-31-02 mp55_ÜSicht.png
  • Clavius Booster IR cut 22-06-54_p60_5 Text klein.jpg
  • Copernicus 22-18-41_p62_5b Text.jpg
  • Bild klein.jpg

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#925 ETXer

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Posted 16 October 2022 - 08:28 AM

I've just found this topic... unfortunately haven't seen it before...

I show planetary imaging through my Tasco 102M of early 80s, AVI taken with not so young and not too old  DMK 21AU618. The images I made in 2020.

All very nicely done!


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