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New Lowrider Variant?

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#1 gatorengineer

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Posted 10 October 2013 - 07:45 PM

http://www.cloudynig...SC_0040-larg...

I am confused when I look at this scope. The rule used to be 30 degrees for baffling on a lowrider. Any steeper angle and the baffle becomes way to large. What am I missing here. This is more like a 60 bend.... I have "toyed" witht the concept of a baffle in the light path halfway between the secondary and the ID of the cage, but I dont see that going on here....

#2 Mirzam

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Posted 10 October 2013 - 08:56 PM

Looks to me like a very large secondary and designed with sufficient backfocus to permit the use of a 45 degree diagonal at the eyepiece. I'm not seeing any baffles other than what may be at the focuser itself. Neat scope!

JimC

#3 gatorengineer

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Posted 11 October 2013 - 12:41 PM

The only problem is optically it doesn't work. You would get crushed by all of the stray light coming in around the secondary.

#4 kfrederick

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Posted 11 October 2013 - 02:01 PM

I like his ground board and side bearings setup :bow:

#5 Pinbout

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Posted 11 October 2013 - 06:11 PM

Did you ever consider a astatic support for your cell?

#6 gatorengineer

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Posted 11 October 2013 - 06:24 PM

no but I am ecstatic that I will get to work on the sling design you helped so much with this weekend.... LOL...

Danny your a solids wiz, can you see what the cone would look like from a 2" focuser on lets say a 50 degree lowrider 36 inch..... It would I think be easy in solids...... If I could baffle it in the light path, might be doable. Would be near impossible to do in 2 D...

#7 Pinbout

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Posted 12 October 2013 - 01:05 PM

Need specs to do it. But I wouldnt have a problem with 2d...

#8 mark cowan

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Posted 12 October 2013 - 08:42 PM

An adjustable iris could baffle it properly just past the focuser. Hard to baffle it anywhere else with that kind of angle. I like the looks of the scope - nobody will be kicking sand in it's face. ;)

Best,
Mark

#9 Mirzam

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Posted 13 October 2013 - 03:27 AM

I was not very clear in my earlier post, but the use of a 45 degree diagonal to straighten out the viewing angle would serve to some degree as a focuser baffle.

JimC

#10 gatorengineer

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Posted 13 October 2013 - 12:16 PM

challenge is at F3.6 you will be clipping with a typical focuser/diagonal combo a 3" focuser and you wont get baffling... for this scope you would want as wide as you can get so an Iris wouldnt work well with the large field stops...

#11 Pinbout

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Posted 13 October 2013 - 12:54 PM

hows this for a start...don't know the field stop you'd use.

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#12 gatorengineer

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Posted 13 October 2013 - 07:22 PM

many thanks Danny....let's say 4inches of 2 inch ID focuser tube... baffle gonna be huge.....

#13 Pinbout

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Posted 13 October 2013 - 10:39 PM

hows a 66" height off the front surface? LOL

I think its a 1-1/2" scale on a c size sheet.

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