January 8, 2018: The C9.25 Of My Dreams Is Here! And the Trapezium Falls to its Might!

Well, I’ve finally done it!  I’ve finally bought my long sought after Celestron 9.25-inch optical tube assembly (OTA).  I had been very patient, waiting and waiting for a used one to come up for sale at a reasonable price with the newer Starbright XLT coatings, as they have about 10-15% greater light transmission than the […]

Read More January 8, 2018: The C9.25 Of My Dreams Is Here! And the Trapezium Falls to its Might!

June 16, 2017: The Orion Sirius Pro AZ/EQ-G mount, Part Two – Great Locating and Tracking! and the Celestron Lithium Powertank

Power problems solved!  The Celestron Lithium Iron Phosphate Powertank (which I’ll more fully describe below) puts out 3 amps, and powers this mount excellently.  No more stutter-slew or stutter-track as I described in my last post.  The mount just works great.  Finally. But how well does this mount really work?  I tested it two ways […]

Read More June 16, 2017: The Orion Sirius Pro AZ/EQ-G mount, Part Two – Great Locating and Tracking! and the Celestron Lithium Powertank