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Equipment Discussions >> Equipment

Pages: 1
dandabson
super member


Reged: 10/15/08

Loc: Dover, DE
50mm Guidescope stroke of luck new
      #5632938 - 01/20/13 10:41 AM Attachment (37 downloads)

So for a while I have been gathering pieces for a project guide scope. I was using a widefield 80mm with decent luck. I am only imaging with a 4.5 starblast imaging OTA and the guidescope was heavier and bulkier than the imaging tube. So, I purchased a used Bausch and Lomb 50mm finderscope with 3 point rings of the 'Mart'. Next came the new HP HD webcam I bought off ebay. I did the mods to the camera, removing excess plastic and lens, and tested it. I had an old 1.25 to 2 inch adapter sitting around. A lot of work with a metal file and it finally fit into the tube. I set it up on a tripod and attempted to get some video to align it to the imaging ota. I focused on the farthest point I could see away. A electricity pole box with a green LED light down the street. I focused and waited to give it a try at night. Well I set everything up and aligned the mount. I left the scope pointing at the last calibration star. I powered up the webcam expecting to see nothing, needing to adjust focus settings would take forever I thought. The window popped up on the laptop with a perfectly focused star. I slewed the scope over to M36 to try to image it. Sure enough the guidescope picked up a star. It guided perfectly for over 37 minutes. Not bad for something I cobbled together.

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CJK
professor emeritus


Reged: 12/05/12

Loc: Northeast TN
Re: 50mm Guidescope stroke of luck new [Re: dandabson]
      #5633242 - 01/20/13 01:34 PM

Nice work!

-- Chris


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microstar
Pooh-Bah


Reged: 01/05/08

Loc: Canada
Re: 50mm Guidescope stroke of luck [Re: CJK]
      #5633698 - 01/20/13 06:07 PM

I find a lot of the fun is putting together equipment and finding to my surprise it works!
...Keith


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Jaimo!
Pooh-Bah
*****

Reged: 10/11/07

Loc: Exit 135 / 40° North
Re: 50mm Guidescope stroke of luck new [Re: microstar]
      #5634219 - 01/21/13 12:33 AM

Nice work! Nothing a little elbow grease and ingenuity can't solve!

Jaimo!


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StarStuff1
Post Laureate
*****

Reged: 04/01/07

Loc: South of the Mason-Dixon Line
Re: 50mm Guidescope stroke of luck new [Re: Jaimo!]
      #5637223 - 01/22/13 04:03 PM

There is a lot of pride (and it should be so!) in making a useful accessory for your self and it works so well!

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ZeroID
sage


Reged: 04/21/10

Loc: Auckland, New Zealand
Re: 50mm Guidescope stroke of luck new [Re: StarStuff1]
      #5637604 - 01/22/13 07:35 PM

My guidescope is a 50mm bino objective inside a cutoff Xerox Toner tube with a cheap plastic focusser assembly with an SPS880 webcam mounted into a hommade angle aluminium with rubber straps and adjusting knobs.

Works perfectly, 2 hour guides using PHD.


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Jaimo!
Pooh-Bah
*****

Reged: 10/11/07

Loc: Exit 135 / 40° North
Re: 50mm Guidescope stroke of luck new [Re: ZeroID]
      #5637614 - 01/22/13 07:48 PM

Quote:

My guidescope is a 50mm bino objective inside a cutoff Xerox Toner tube with a cheap plastic focusser assembly with an SPS880 webcam mounted into a hommade angle aluminium with rubber straps and adjusting knobs.

Works perfectly, 2 hour guides using PHD.




You need to post a photo of that!

Jaimo!


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