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atm_free · Amateur Telescope Making

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  • Members: 1513
  • Category: Telescopes
  • Founded: Jun 1, 2002
  • Language: English
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Messages 20349 - 20378 of 23452   Oldest  |  < Older  |  Newer >  |  Newest
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20349 Mark Christensen
mjcw500@att.net Send Email
Feb 5, 2012
4:14 pm
The Best Way is to buy a good film/slide scanner. That will run you in the $200-300 range for a good one. I bought a Konica/Minolta five years ago before they...
20350 georgea@...
lord_tillerman Send Email
Feb 6, 2012
4:40 am
Jacques A couple of questions. 1) Do you have a SCSI card for your computer or can you get one? 2) Where in Quebec are you located? 3) Are you running Mac or...
20351 jacques
savardjacque... Send Email
Feb 6, 2012
1:46 pm
1- I can put a SCSI card on my computer no problemo but whay do you asking me this 2-I live in quebec city loretteville 3-I am pc but a still have a old...
20352 georgea@...
lord_tillerman Send Email
Feb 7, 2012
4:46 am
Because I have Polaroid Sprintscan Plus that I could send you. It scans at 2400DPI and is good for many images. George...
20353 Gary
gfphoto2003 Send Email
Feb 7, 2012
8:52 pm
That's a really nice offer. I had an original Sprintscan when they came out and it was a fine machine. Gary...
20354 Madhukar Bhatia
madhukar_bhatia Send Email
Feb 8, 2012
6:37 am
Hi Jerry, I am working to remove the astig in my mirror. I took a couple of Ronchi pictures last night after a session. I have question about picture taken ...
20355 Jerry
atc322asd Send Email
Feb 8, 2012
9:41 am
I don’t think CeO is 5 times faster, but you may find some advantage with it. It is not nearly as messy as rouge. There seems to be some asymmetry in the...
20356 madhukar
madhukar_bhatia Send Email
Feb 8, 2012
3:29 pm
Hi Jerry, Thanks for detailed instructions. I will go through it once more to ensure that I have not missed anything. The pitch lap is still pretty good. I...
20357 Jerry
atc322asd Send Email
Feb 8, 2012
5:09 pm
Hello Madhukar. If you have not already done that last suggested session... It seems from your description of small drag that maybe improved pressing procedure...
20358 ozprof Send Email Feb 8, 2012
5:47 pm
Hi all, Does anyone know of any plans for constructing a 2" flip mirror? Cheers, Maurice...
20359 art.bianconi Send Email Feb 8, 2012
7:43 pm
I've several flip mirrors Maurice. Some are built into their respective scopes. Others I purchased when I thought I'd be doing imaging. After examining all of...
20360 art.bianconi Send Email Feb 9, 2012
5:09 am
The ancillary devices needed to support commands from the Bartlett controller are finally installed and wired. When I applied power it came on properly. It...
20361 ozprof Send Email Feb 9, 2012
8:26 pm
Hi Art, Thanks for the response. I have been looking for a 2" flip mirror for a while to use on the college telescope when doing spectroscopy, but have been...
20362 art.bianconi Send Email Feb 9, 2012
10:30 pm
Hi Maurice! There was a time when I'd use most any excuse as justification for sitting down at my workstation and enginering some new idea. I can't do that any...
20363 art.bianconi Send Email Feb 9, 2012
11:20 pm
Maurice, it just occurred to me. . . . . . are you at a college? If there is an engineering department then it's virtually assured that they have basic and...
20364 art.bianconi Send Email Feb 10, 2012
12:34 am
Today I received an invitation to take part in a Webinar devoted to studying stress in optical instruments and their related fixtures. The extensive...
20365 Madhukar Bhatia
madhukar_bhatia Send Email
Feb 10, 2012
1:12 pm
Hi Jerry, I have already done one set and I am planning to do one more during the weekend. I have only taken Ronchi pictures. I plan to click Foucault results ...
20366 David
dmgroski Send Email
Feb 10, 2012
4:28 pm
Maurice, Here is a link to plans for 1.25", and you can use this as great starting point to make a 2" version. http://www.cityastronomy.com/flip-mirror.htm ...
20367 Jerry
atc322asd Send Email
Feb 10, 2012
5:10 pm
I can't say that the very thin slurry is good or bad. I have never done it exactly that way, so I don't know. I think the very thin mixture is more suited to...
20368 savardjacques@...
savardjacque... Send Email
Feb 10, 2012
5:45 pm
I lost one of my group speaking about mirror plating untehr vacuum ans also pirany gage some body remember here maybe jack 47'n 71'W...
20369 Jerry
atc322asd Send Email
Feb 10, 2012
9:07 pm
Some of your Ronchi images show a significant distortion at the bottom as though all the mirror's weight is resting on one point at the very bottom. You will...
20370 Jerry
atc322asd Send Email
Feb 10, 2012
9:08 pm
20371 art.bianconi Send Email Feb 10, 2012
10:29 pm
Hi Maurice! Here is a Flip Mirror Diagonal by Vixen for 2" Focusers Vixen Product Number: 2680 List Price: $140.00 Our Price: $109.95 Ocenside Photo &...
20372 ozprof Send Email Feb 10, 2012
11:54 pm
Thanks to all the replies. Art, I will have a look at the Vixen. The local astro shop in Dallas had told me that they were no longer making the 2" just like...
20373 art.bianconi Send Email Feb 11, 2012
5:07 pm
Maurice, here is yet another source of the Vixen 2" Flip mirror: Telescopes.Com <http://www.telescopes.com/telescope-accessories/diagonals-and-prisms/fl\ ...
20374 David
dmgroski Send Email
Feb 11, 2012
8:57 pm
Hi Maurice, If you decide to make one I've uploaded a picture of the two that I've built. They are in my folder 'Dave Groski'. As I said in my other reply, one...
20375 art.bianconi Send Email Feb 12, 2012
3:10 am
The Bartlett V6 based programmable controller was fired up for the first time and put through it's paces. (Photo Section) The wait was worth it! I now have a...
20376 savardjacques@...
savardjacque... Send Email
Feb 12, 2012
3:52 pm
I remenber now thep photo is from a vacuum chamber in florida a very big one help please jack 47'N 71'W...
20377 Gary
gfphoto2003 Send Email
Feb 12, 2012
3:52 pm
Very nice work Dave. Did you use glass from an existing unit? Gary...
20378 David
dmgroski Send Email
Feb 12, 2012
6:09 pm
Hi Gary, Thanks. The flat mirrors are from Edmund. They were used as diagonals for their 4.25" f/10 reflectors. The unit made from the electronic control box...
Messages 20349 - 20378 of 23452   Oldest  |  < Older  |  Newer >  |  Newest
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