Telescopes & Binoculars

Telescope, Binocular, Microscope & Riflescope Blog

Entries for October 2nd, 2008

Sky-Watcher EQ5 PRO 8″ SCT Telescope Monster Aperture with GO-TO Mount SW8SCT-EQ5P/SYN

Item No. 113-11600
Manuf. No. Sky-Watcher SW8SCT-EQ5P/SYN
Crave large aperture? The reflector design reins supreme as the king of large aperture. The most popular reflector design configurations are the classic Newtonian and the SCT. The SCT is an exotic form of reflector using mirrors and a lens, sometimes called a mirror-lens, or catadioptric. If you can imagine [...]

A Coma Correcter for a Celestron C 11 Schmidt Cassegrain Telestron

Qestion:
Would you have  a coma correcter for  a celestron  c 11  schmidt cassegrain telestron
From martin williams
Answer:
Martin,
There is no such lens available.  There is a focal reducer/field flattener lens available that reduces the speed to f/6.3 and flattens the inherently curved field.  But there is no coma corrector for SCT scopes on the market, to my [...]

iOptron Mini-Tower Altazimuth Telescope Mount with GPS & Go-To

Item No. 644-20050
Manuf. No. iOptron 8300
The MiniTower is the perfect combination of capacity and portability. The iOptron MiniTower is an altazimuth telescope mount with GPS and computer Go-To technology. The rated instrument capacity of 25 pounds is sufficient to handle Schmidt-Cassegrains of up to eight inches as well as most 80 and 100mm class refractors.
The [...]