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I would start by tilting the primary (as you did for the mirror flop study) then tilt the secondary to produce the best "on axis" star. But OSLO will probably re-center the corrector, though I think

Thanks a lot Stan :-) I think I can start with a radial optical offset of the Schmidt plate to check out what is going on. But ... I have to do some reading to get a better understanding on how OSLO

Christian, The moon shots are fantastic! The OSLO simulations are interesting. The Sensitivity to primary mirror tilt (image shifting) section assumes that the primary's null position is perfectly

Dear All, Please find some images of the moon taken on December,12 with the "classic" C14 : Copernicus area with the Hortensius domes near the terminator :

I have 28mm WO eyepiece (82* field) that I tested with the 14"Edge, as well as a stock 23mm Luminos. Both work pretty good as far as I can tell. No reflections and no coma. There could be some softer

Clouds, but stable air. Soft, but sharpened up at the end. Moon next door reduced contrast on video, but was easy to fix. In photos section : <

You have no right to complain! That image is competitive with Christopher Go. I enjoy the blue streaks because they are holes in the clouds that reveal an Earth like nitrogen atmosphere. Stan

Frustrating seeing this night. Excellent for the red channel, mediocre for green and blue!That was the pattern all night! Here is a combination of two data sets taken over 11 minutes:

SCTs are easy to collimate because there is only one accessible adjustment - secondary tilt-tip. Collimation aids are entirely unnecessary and of dubious value compared to star collimation. Star

Or you can spend no money and simply use a paper donut mask. It actually works very well: http://www.samirkharusi.net/collimation.html http://www.samirkharusi.net/collimation.html I just recollimated

Andre, I bought the HOTECH collimator last year for my C-14, mounted on a pier in my obs. I have not been able to get the screen back far enough-because of the height of the walls- to do a good job. I

Hi Group, I am looking for a collimator for my C14edge . Who tested the HOTECH SCT advanced collimator and/or the BAADER C1335 recommended by Celestron. Which is the best or the easiest of use ??

Stan, This is a European (Dutch) manufacturer. He implements roller drive system. So far I am VERY happy. The Mount is top-notch at a reasonable price. Rated capacity is 100KG, though for imaging I

Nice looking setup. I'm not familiar with that mount. Do you like it? The star shapes look pretty good. Stan

After finally assembling and testing my new rig, here are the first results: http://groups.yahoo.com/neo/groups/C14_EdgeHD/photos/albums/385975148 So far I am quite impressed. I had to return the OTA

Personally I'd go with a Televue 41mm Panoptic or a 31mm Nagler. They have basically the widest FoV of any eyepiece in a 2" barrel, with the 41mm very slightly wider. Televue has an eyepiece

Reflections are not necessarily from the EP. Check the diagonal and everything in the image train for any unblackened surface. Also check the EP; you might be able to fix the problem. I recommend a

I had not thought of this, so thanks for the idea. The issue, then, is not necessarily finding a low power long focal length EP, but rather finding the EP with the widest true FOV that works agreeably

LOL - I thought it was some DSO I had never heard of.

Sorry. My android phone went crazy and sent this mail here. My apologies. Chris Christopher and Vicky Go Christone Industries Manufacturer and Exporter of Quality Fossil Stone and Wrought Iron