SingAstro

Test report!

photos and test report added.

I have an opportunity to get one or two OTA sets in mint condition from the manufacturer. Each OTA comes with * optical test report/certificate (~1/8 lambda p.t.v. surface) of the lens * 2" feathertouch focuser (with brake and compression ring) and * a pair of tube rings. For more information, ...

Sold.

"Smooth one-piece design is 2" OD from the 40 mm lens right up to the stepped shoulder. Multi-coated doublet lens. Large rubber gripping ring. Two thumb screws hold your 2" eyepieces securely. Velvet black anodized scratch resistant finish. Unique internal baffle system for excellent ...

thanks for the informative link.

The conceptual drawing was created by microsoft word, recording what I saw last night through a five inch refracting telescope from my kitchen. I did not expect to see the 12.5 magnitude field star to the north east of alpha crucis under light polluted Singapore sky, however with little surprise I s...

All reserved, will try to get a new batch.

The mount is recommended to support small refractors, birding scopes, 5~6 inch SCT or MCT and telephoto lens. For a temporary setup with bigger scope such as an 8 kg Takahashi Mewlon 210, a heavy duty tripod and careful balancing are required. At this moment, I am very happy with its butter smooth m...

some pics for your information. 1) full length brass bushing http://i198.photobucket.com/albums/aa165/denebman007/fulllengthbrassbushing.jpg 2) thrust bearing for better smoothness http://i198.photobucket.com/albums/aa165/denebman007/thrustbearing.jpg 3) mounting disc and bottom disc http://i198.pho...