Jump to content

  •  

CNers have asked about a donation box for Cloudy Nights over the years, so here you go. Donation is not required by any means, so please enjoy your stay.

Photo

Old Scopes and Modern Imaging

ccd classic equipment imaging
  • Please log in to reply
314 replies to this topic

#226 DMala

DMala

    Apollo

  • *****
  • In Memoriam
  • Posts: 1455
  • Joined: 02 Jun 2015

Posted 11 October 2017 - 02:35 PM

I doubt the 9VR is up to the task of splitting e1 and e2. You can do it visually with a quality optic, long focal length 60mm but I think the CA would make it impossible with the fast little 9VR. Can you do it visually with that scope? If so, I'm impressed. Currently, the axes of the two doubles are at a noticeable angle to eachother. I can't detect any elongation that indicates that spatial pattern over the blooming of each in the image. Did you try it (imaging e1 and e2) with the 3" F16 Tasco you had set up during the session?

 

OK, I am back to followup on this topic. Just briefly:

 

- Yes visually I can split Epsilon Lyrae 1-2 with a Tasco 9VR. While with a TV 2X Barlow and extension tubes the image gets excessively soft for me, simply at 75X with a  nice 1.25" University Optics OR 4mm I have and a Baader prism diagonal  the separation was not hard to see at all. BTW  also Kansas Skies reported the ability to split the double-double here  https://www.cloudyni...ocus/?p=8006766

 

- No I can not clearly document photographically the split with the Tasco 9VR on a tripod. With no Barlow there is not enough magnification, although after stacking fifteen 800 ISO 0.6 sec pics in DSS the separation Zeta 1-Zeta 2 is visible: see photo. With a Barlow, as noted above, the image is too soft. With a CZJ 18mmH in eyepiece projection configuration and low ISO (800 and .5 sec: see pic) there is a difference in the shape of each pair, but I would not call that a split.

 

So, in conclusion this was a good topic to focus my interest on as:

- it gave me the opportunity to learn more about noise Vs ISO response of my camera, and about dynamic range. 800 ISO seems the best spot.

- I obtained a Tasco VR manual and understood the use of the extension tubes

- It gave me a nice excuse to buy a complete 9VR set on GW (at a good price btw), in addition to the OTA I had bought separately... now I can have one at each of my two primary observation sites....

Attached Thumbnails

  • Double Double Tasco 9VR 800ISO .5 sec.JPG
  • Double Double 10 Oct 2017 Tasco 9VR 800ISO .5 Sec Stacked edited Photoshop.jpg

Edited by DMala, 11 October 2017 - 10:43 PM.

  • TerryWood, Bonco2 and Bomber Bob like this

#227 Augustus

Augustus

    Stardust Telescopes

  • *****
  • Vendors
  • Posts: 7454
  • Joined: 26 Dec 2015
  • Loc: Connecticut

Posted 11 October 2017 - 02:53 PM

Went back and reprocessed some really old photos taken with the 2080 (now on its way to a new owner) of the end of a Ganymede transit:

 

jupiter_00_37_51enhanced.png

 

jupiter_00_42enhanced.png

 

 


Edited by Augustus, 11 October 2017 - 02:54 PM.

  • Bomber Bob and DMala like this

#228 DMala

DMala

    Apollo

  • *****
  • In Memoriam
  • Posts: 1455
  • Joined: 02 Jun 2015

Posted 20 October 2017 - 12:12 PM

Yesterday I took out my 80mm Meade 320 and tested a bit the photo equipment. It was nice to see that I could reach focus both without and with a Barlow, but the final results were nothing worth posting here. I will try again in better seeing conditions. But, as consolation prize, at least I think that Vega through a Bahtinov mask looks really pretty! smirk.gif

Attached Thumbnails

  • Vega Bahtinov.jpg

  • deSitter, DreamWeaver and TerryWood like this

#229 BigC

BigC

    Fly Me to the Moon

  • *****
  • Posts: 5773
  • Joined: 29 Sep 2010
  • Loc: SE Indiana

Posted 28 October 2017 - 03:07 PM

Regarding splitting stars with the 9VR I suggest using your choice of colored filter to avoid unfocused colors.Will see what my nice GW 9VR can  do....when get some observing time.


  • DMala likes this

#230 GlendaleGuy

GlendaleGuy

    Explorer 1

  • -----
  • Posts: 53
  • Joined: 26 Sep 2017
  • Loc: Phoenix, Arizona

Posted 04 November 2017 - 06:36 PM

   I've been playing around with trying to do photography with my Classic C8. I've been fighting the periodic nature of the spur gears which has been causing me to expose to the left, shorter exposures. It could be a Losmandy mount is in my future. I will decide in the next year.

 

 

 

Attached Thumbnails

  • Orion 17 FCS.JPG

  • JakeJ, tim53, starman876 and 6 others like this

#231 Augustus

Augustus

    Stardust Telescopes

  • *****
  • Vendors
  • Posts: 7454
  • Joined: 26 Dec 2015
  • Loc: Connecticut

Posted 04 November 2017 - 06:38 PM

   I've been playing around with trying to do photography with my Classic C8. I've been fighting the periodic nature of the spur gears which has been causing me to expose to the left, shorter exposures. It could be a Losmandy mount is in my future. I will decide in the next year.

That's a remarkably sharp image. Nice work.



#232 JakeJ

JakeJ

    Mercury-Atlas

  • *****
  • Posts: 2661
  • Joined: 31 Aug 2004

Posted 04 November 2017 - 07:13 PM

   I've been playing around with trying to do photography with my Classic C8. I've been fighting the periodic nature of the spur gears which has been causing me to expose to the left, shorter exposures. It could be a Losmandy mount is in my future. I will decide in the next year.

I'd say you did an excellent job.  Did you manually guide that?


  • Augustus likes this

#233 GlendaleGuy

GlendaleGuy

    Explorer 1

  • -----
  • Posts: 53
  • Joined: 26 Sep 2017
  • Loc: Phoenix, Arizona

Posted 04 November 2017 - 08:13 PM

 

   I've been playing around with trying to do photography with my Classic C8. I've been fighting the periodic nature of the spur gears which has been causing me to expose to the left, shorter exposures. It could be a Losmandy mount is in my future. I will decide in the next year.

I'd say you did an excellent job.  Did you manually guide that?

 

As best I could, but I had to throw away a lot of the captures for elongated stars. :(


  • JakeJ, Bomber Bob and Augustus like this

#234 DMala

DMala

    Apollo

  • *****
  • In Memoriam
  • Posts: 1455
  • Joined: 02 Jun 2015

Posted 04 November 2017 - 09:14 PM

Can you provide details on camera, iso, exposure time, number of frames, stacking etc? Great job
  • Augustus likes this

#235 GlendaleGuy

GlendaleGuy

    Explorer 1

  • -----
  • Posts: 53
  • Joined: 26 Sep 2017
  • Loc: Phoenix, Arizona

Posted 06 November 2017 - 01:42 PM

Can you provide details on camera, iso, exposure time, number of frames, stacking etc? Great job

It was a Canon 50D using BackyardEOS. There was 4 darks and 50 lights, though only about 10 or 15 were good after going through them. Exposures were 30 seconds and 60 seconds at ISO 1600, like I said only a few of the 30 second ones survived with round stars.


  • Bomber Bob, DMala and Augustus like this

#236 svenk123

svenk123

    Explorer 1

  • -----
  • Posts: 83
  • Joined: 20 Dec 2016
  • Loc: Frankfurt, Germany

Posted 15 November 2017 - 06:01 AM

Hello,

 

here is my image of M33 taken with a Celestron C8 classic from 1982 and ASI ZWO 1600MMC. I am still using the C8 on its original fork mount with it spur gear drives. The periodic error of the ra drive is still a problem. Because i don't want to defork this classic scope, i have build a microcontroller based drive corrector with a guiding port.

With PHD guiding is it no longer a problem to take long exposure images.

 

This image is a LRGB composite consisting of 20x 240 sec and 120 sec subs.

 

Clear skies

 Sven

Attached Thumbnails

  • M33_C8_2017114_small.jpg

  • Joe Bergeron, JakeJ, tim53 and 11 others like this

#237 GlendaleGuy

GlendaleGuy

    Explorer 1

  • -----
  • Posts: 53
  • Joined: 26 Sep 2017
  • Loc: Phoenix, Arizona

Posted 17 November 2017 - 10:54 AM

Hello,

 

here is my image of M33 taken with a Celestron C8 classic from 1982 and ASI ZWO 1600MMC. I am still using the C8 on its original fork mount with it spur gear drives. The periodic error of the ra drive is still a problem. Because i don't want to defork this classic scope, i have build a microcontroller based drive corrector with a guiding port.

With PHD guiding is it no longer a problem to take long exposure images.

 

    I'd love to know how you did that. I'm still struggling with the vintage Accutrac.



#238 svenk123

svenk123

    Explorer 1

  • -----
  • Posts: 83
  • Joined: 20 Dec 2016
  • Loc: Frankfurt, Germany

Posted 18 November 2017 - 10:02 AM

I have derived my circuit from this diy drive corrector found here:

 

https://github.com/garlick/ultima8

 

Instead of a hand controller box i have connected it to the ST4 port of my guiding cam. A i have used some other new electronic components. 

 

I think other vintage scopes with AC clock drives can be modernized with it for imaging. 


  • tim53 likes this

#239 Tenacious

Tenacious

    Viking 1

  • *****
  • Posts: 629
  • Joined: 19 Oct 2015
  • Loc: Northern KY

Posted 18 November 2017 - 10:22 AM

   I've been playing around with trying to do photography with my Classic C8. I've been fighting the periodic nature of the spur gears which has been causing me to expose to the left, shorter exposures. It could be a Losmandy mount is in my future. I will decide in the next year.

Great looking results!  When I get my Celestar (on a modified Deluxe fork) up and running, I hope I can do as well.   If the cost of using the original fork is loosing some frames, I'll be all in.

 

Thanks for the inspiration, Glendaleguy and Svenk123!



#240 DreamWeaver

DreamWeaver

    Surveyor 1

  • *****
  • Posts: 1865
  • Joined: 30 Dec 2008
  • Loc: Tucson, AZ

Posted 18 November 2017 - 10:37 PM

M42 was my only imaging attempt with my LX3 from about 3 years ago.  I spent a few minutes locking in the polar alignment before taking the images.

 

120"  9x lights, 20x darks
30"  20x lights, 20x darks
5"  20x lights, 20x darks
20x bias
20x flats

Unguided LX3 2080 w/Antares f/6.3 Focal Reducer
Unmodded XSi (450D)

I used DSS to stack the three different exposures separately and then used Photomatix HDR software to combine them.

 

Attached Thumbnails

  • image.jpeg

  • JakeJ, deSitter, tim53 and 12 others like this

#241 xavier

xavier

    Viking 1

  • *****
  • Vendors
  • Posts: 942
  • Joined: 31 Oct 2007
  • Loc: France

Posted 24 November 2017 - 11:31 AM

Hello,

Used again the 1000mm f:5.6 Zeiss Speigelobjektiv.  A heavy piece of equipment made in 1965.

The lens has a diameter of 20cm (8") and weights 14kg.  You can compare it to a very fast C8 but a little heavier.

Used a modern EQ8 mount and a Sony a7S.  Need a hybrid camera because the lens has not much back focus.

The EQ8 doesn't need any guiding.  Makes it easier.

 

70 photos each 30sec in combination with flat's, dark's and Bias.

Best

Xavier

 

 

Attached Thumbnails

  • m42_20171115_zeiss.jpg
  • m45_zeiss1000web.jpg

  • JakeJ, tim53, highfnum and 12 others like this

#242 JakeJ

JakeJ

    Mercury-Atlas

  • *****
  • Posts: 2661
  • Joined: 31 Aug 2004

Posted 24 November 2017 - 12:56 PM

A couple of Mars with my Super C8+

Looking forward to trying it again this summer.

 

Mars.jpg

 

Mars2.jpg


Edited by JakeJ, 24 November 2017 - 12:57 PM.

  • tim53, highfnum, starman876 and 11 others like this

#243 Bonco2

Bonco2

    Mariner 2

  • *****
  • Posts: 223
  • Joined: 01 Jun 2013

Posted 24 November 2017 - 03:15 PM

I think most will agree the C 8 classic revolutionized astro photography.

Bill



#244 svenk123

svenk123

    Explorer 1

  • -----
  • Posts: 83
  • Joined: 20 Dec 2016
  • Loc: Frankfurt, Germany

Posted 25 November 2017 - 06:10 AM

I agree with you Bill.

But i think there some more classic celestrons out there.
The C5 classic or the C90 astro for example. These scopes are smaller than the C8 but have very sturdy fork mount.

I hope there is somebody making modern imaging with these classics.

Edited by svenk123, 25 November 2017 - 06:11 AM.

  • TerryWood likes this

#245 TerryWood

TerryWood

    Mercury-Atlas

  • *****
  • Posts: 2881
  • Joined: 15 Mar 2012
  • Loc: USA

Posted 03 December 2017 - 11:58 PM

I decided to take out the Questar 700mm telephoto lens to capture tonight's Super Moon. I used a ZWO 174MM camera. The resulting image is far from refractor sharp, but I still kind of like it. It kind of reminds me of older film images of the Moon. Focus was tough with the helical focuser on a shaky deck and mount.

This was converted to jpeg for posting and will look clearer when you open it up versus the preview screen. Thanks for looking!


V/R

Terry

Attached Thumbnails

  • IMG_9831.JPG

Edited by TerryWood, 03 December 2017 - 11:59 PM.

  • Paul Schroeder, starman876, DreamWeaver and 8 others like this

#246 deSitter

deSitter

    Still in Old School

  • *****
  • Posts: 12129
  • Joined: 09 Dec 2004

Posted 04 December 2017 - 12:46 PM

Hello,

Used again the 1000mm f:5.6 Zeiss Speigelobjektiv.  A heavy piece of equipment made in 1965.

The lens has a diameter of 20cm (8") and weights 14kg.  You can compare it to a very fast C8 but a little heavier.

Used a modern EQ8 mount and a Sony a7S.  Need a hybrid camera because the lens has not much back focus.

The EQ8 doesn't need any guiding.  Makes it easier.

 

70 photos each 30sec in combination with flat's, dark's and Bias.

Best

Xavier

Oh MAN is that pretty! That's the visual impression x 100!!

 

-drl



#247 Bonco2

Bonco2

    Mariner 2

  • *****
  • Posts: 223
  • Joined: 01 Jun 2013

Posted 04 December 2017 - 03:12 PM

The full moon picture is superb. Very hard to get such good contrast.

Bill


  • TerryWood likes this

#248 TerryWood

TerryWood

    Mercury-Atlas

  • *****
  • Posts: 2881
  • Joined: 15 Mar 2012
  • Loc: USA

Posted 05 December 2017 - 09:00 PM

Thanks Bill! I'm not sure of the exact date the lens was manufactured, but I believe it was sometime in 1977. At f/8, it's a nice compliment to a Questar 3.5 f/15. If I mount it on a CGEM it's rock steady. I put it on a single fork arm for the moon image and it was really too shaky. It's a pretty heavy lens. Looking forward to doing more imaging with it! V/R Terry
  • Bomber Bob likes this

#249 Bomber Bob

Bomber Bob

    Voyager 1

  • *****
  • topic starter
  • Posts: 14966
  • Joined: 09 Jul 2013
  • Loc: The Swamp, USA

Posted 05 December 2017 - 09:15 PM

Your photos with the Questar are a great testimony to the quality & capabilities of these Classics -- and good advertising, too!!  (They should send some royalty $$$ your way!)


  • TerryWood and Augustus like this

#250 TerryWood

TerryWood

    Mercury-Atlas

  • *****
  • Posts: 2881
  • Joined: 15 Mar 2012
  • Loc: USA

Posted 05 December 2017 - 10:02 PM

Thanks for the compliment JW! It sure is a lot of fun to see what a Q (or Q700) can do. I feel inspired whenever I take it out of it's case...it just has the look. Kind of like a combination of Fantasia and Cosmos, it stirs my imagination. Don't know if my images are $$$ worthy, lol, but I'm definitely going to keep at it!


V/R

Terry

Edited by TerryWood, 05 December 2017 - 10:04 PM.

  • Bomber Bob likes this


CNers have asked about a donation box for Cloudy Nights over the years, so here you go. Donation is not required by any means, so please enjoy your stay.


Recent Topics





Also tagged with one or more of these keywords: ccd, classic, equipment, imaging



Cloudy Nights LLC
Cloudy Nights Sponsor: Astronomics