Image of the day

Captured by
RICHARD COFER

VdB 141 Ghost Nebula

About Astromart

My Account

New to Astromart?

Register an account...

Need Help?

Posts Made By: Walter Hamler

September 10, 2002 07:50 PM Forum: Telescope Making

What is a good source for a 10" F/5 Mirror?

Posted By Walter Hamler
How about Mark Harry Optics?

Walt

September 30, 2002 12:00 PM Forum: Deep Sky Observing

Daytime Alignment

Posted By Walter Hamler
What you need to do is find an object on the horizon that is either due north or due south and do an align on that as if it were an object. The staff at the Orlando Science Center dous that to allow daytime viewing with their LX200 12". Reall works well. Once a brigh object is found, further tweaking is possible.

Walt

October 9, 2002 02:20 PM Forum: Deep Sky Observing

Megameet XI, 2002/10/5 Part II

Posted By Walter Hamler
Dave, have you ever seen B33 through a scope of ANY size? We have an ongoing argument among some of our club members as to its visibility. I personally have never seen it and have tried with up to 40" aperature, but have never tried any filtration.
Walt

October 12, 2002 02:33 AM Forum: Telescope Making

ATM BOOKS

Posted By Walter Hamler
Have you ever done a search through Amazon.com for old out of print books? I did one once for Neale Howard's revised edition of the Standard Handbook and found about a dozen copies at various places. Most were in "used" condition at reasonable prices, but was surprised to find two new with jackets for less than 20.00 each. I bought one from a place in Oregon. I had a selfish interest as the jacket has a picture of a 12.5" dob that I made back in the late 70's. I should never have sold that scope!!

Walt

October 12, 2002 08:15 PM Forum: Telescope Making

Another Lost ATM Book

Posted By Walter Hamler
Where are you finding these old books?

Walt

October 23, 2002 04:03 PM Forum: Equipment Talk

Siebert Ultra EPs vs. Radian or Pentax

Posted By Walter Hamler
I haven't used one of the newer Ultra series Sieberts, but do have his 4.9.. and the 1.5~2.5x barlow. Both are very good and perform very well in my 8 and 10 in f/6 dobs. I used to have a 6mm Radian and found it useless due to ghosting and kidney beaning.

Walter

October 23, 2002 05:41 PM Forum: Telescope Making

Mirror Testing and Recoating

Posted By Walter Hamler
Check out this site http://home.covad.net/~alcoat/

Walter

October 25, 2002 11:48 AM Forum: CCD Imaging and Processing/Solar System

Few questions to the digi cam guys

Posted By Walter Hamler
Anthony, I don't know about software and stacking(yet), but your best bet for attaching the camera to the scope/eyepieces is the Scopetronix adapters. You will need the basic 28mm to t-thread adapter and then the adapter that will fit whichever eyepiece(s) you want to use. I have been using my 4500 with a 15mm Panoptic and a generic 30mm plossl. The plossl allows wider field shots (whole moon or 1/2) and the Panoptic gets me even closer. The main criteria is to be able to get the camera lens as close to the eyelens of the eyepiece as possible. Check out the Scopetronix site (Astromart advertiser).

Walt

October 27, 2002 04:37 PM Forum: Telescope Making

Mirror Cells - Where?

Posted By Walter Hamler
John, why don't you build one yourself. Properly done in plywood of the right thickness and sealed against weather, plywood will make a completely adequate cell for a 7" mirror of any thickness or thinness. The web has all sorts of examples and several books also.

Walter

October 30, 2002 12:30 PM Forum: Telescope Making

Where is a good place for mirror coatings?

Posted By Walter Hamler
I have used Bob Fies at Astrocoat for several mirrors and have not been disappointed. http://home.covad.net/~alcoat/
He is about 5.00 per inch.

Walt

Funding Member

Sponsors


View all sponsors

Search