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crayford focusser

(11)
Maybe a stepper motor in micro step mode You can test it whit a floppy disk 3inch The sytem have all the control for free And you can find on the web
jacot
11
posts
11:46 AM

stuck pitch lap

(15)
Hi Rick, Your welcome and very glad this method worked for you. Good luck in completing your mirror once your able to resume working on it. John From:
John Vogt
15
posts
Jul 22
radicell2
10
posts
Jul 20

Identifying Glass Types for a Doublet

(22)
... Peter, It might also be noted that the N-BaK2 and N-BaSF64 combination can be used as the secondary doublet glasses to get a relatively short (<25%
Richard Snashall
22
posts
Jul 11

3D filter howto

(6)
Hi Paul, You are very correct in this. For passive 3D the projector(s) and viewers both need polarizers and the screen needs to be silver to maintain the
Peter
6
posts
Jun 30

18" thin mirror

(18)
Many thanks for the explanation Paul, especially that on Twyman stress. I guess for someone that is picking up the threads after a 50 year absense there is
walking_david
18
posts
Jun 28

Laser collimator

(12)
hi Velinoff, a few things to consider: misalignment of the laser apparently is not one of these. The wrong shape ( =coma) of the mirror is not likely - i have
nilsolof.carlin@telia.com
12
posts
Jun 24

new member

(42)
... Very wise, I arrived back once and found the machine still going with the mirror just teetering on the edge of the table, while the aligator arms had
walking_david
42
posts
Jun 24

Re: hrlp fot pin hoke cam

(5)
lAST ADDITION somebody know Barry D malpas he whrote this http://www.coconinoastro.org/OBSERVING%20SUNSPOTS%20USING%20A%20PINHOLE%20CAMERA.pdf
savardjacques@ymail.com
5
posts
Jun 9

Holes

(9)
Yes But Where is the pleasure to built I try first my print cartrig edeal Jack 47’n71 ‘W Keep you inform of result On 6/8/2015 2:42 AM, Peter
jacot
9
posts
Jun 9

Status of stuff

(3)
Anthony, Obviously your having fun. But if I may suggest something, get rid of the RJ-11 connectors. They are flaky and were never designed for how the
Mark Christensen
3
posts
Jun 6
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