Saturday, July 14, 2012

20120714 Sun

Lumenera Lu070M, ebay CaK filter used, Ranger with original focuser, mounted on Gitzo G106 with Manfrotto 410 head, no tracking.

Prime focus (1519 GMT+8):-

With 2x barlows, (1521 GMT+8):-

Wednesday, July 11, 2012

A new small adapter: camera lens as telescope

It allows us to connect an eyepiece, or a CCD camera to a camera lens.

For the eyepiece end, it features a nice thumb-screw with compression ring.

And for the camera side, it has a standard Canon EF/EF-S mount. 

I've tested it straight through with an eyepiece, and it reaches infinity focus without problem.  If a star diagonal is used, one must insert an 2x Barlows in front of the diagonal.

When used with my Canon 200mm f2.8L, it works as a rich field scope in the straight through configuration.  With a diagonal is inserted together with a 2x Barlows, it works as a nice medium power 70mm refractor.

I can offer these small adapters at $49 USD each airmail shipped.

Tuesday, July 10, 2012

Cabinet clearing sales

Package deal: $500 HKD takes them all! 

Individual items price reduced, all reasonable offer will be entertained, just don't want to waste all these stuff.

Canon EOS to 1.25" nosepiece adapter, bought from ScopeStuff, ask for $180 HKD, connect your Canon DSLR with a telescope with 1.25" focuser.

SkyAtlas 2000.0 Deluxe Version, ask for $180:-

And the inside, a pen is placed along side to see the size, it's really a good visual reference!

Next is a 70mm doublet (f=500mm) mounted and with 77mm thread, suitable for macro imaging which brings the closest focusing distance down to less than 500mm. Ask for $100 HKD.

Celestron Nexstar mount parts, the gears were still available at $80 HKD as shown below, the bigger one was about 6" in diameter and the smaller one was 5".  Someone said they have "24 pitch teeth".  The bigger one has 288 teeth and the smaller one has 240 teeth. The central bore is 22mm. (SOLD)

Another custom machined 2" to 1.25" adapter, it's pretty heavy and could be good for balancing light weight 1.25" eyepiece and heavier 2" eyepiece. With two locking screws for added security.  Ask for $50 HKD.

Originally for my Gitzo G1415 when I lost one of the spikes on the legs, so I still have two remain. I've sold my G1415 and now they're sitting idle... very hard to find in Hong Kong and even the distributor refused to order them for me. Ask for $100 HKD.