Telescopes
Current Equipment |
Previous Telescopes |
 |
|
Current Equipment |
|
| |
|
Above: Celestron 280mm CGE-1100 at Big Bend National Park,
January 2006 At left: the author with
C11/CGE imaging set-up at the Denver Astronomical Society's EG Kline
Dark Site, east of Deer Trail, Colorado, April, 2010.
Photo by Joe Gafford |
| |
Celestron 280mm SCT/CGE-1100 |
|
OTA: |
Celestron 11-in (280mm) f/10.0
Schmidt-Cassegrain telescope
(Carbon-fiber tube) |
| Mount: |
Celestron, CGE Nexstar Equatorial Mount (Obtained
January 2004) |
|
Eyepieces: |
| In 280mm SCT |
f/10x |
x2.5* |
FoV (deg) |
|
40mm UA
Konig |
70 |
175 |
1.0 |
|
35mm Televue Panoptic |
80 |
200 |
|
|
32mm
Televue Plossl |
87 |
218 |
0.57 |
|
24mm
Televue Panoptic |
112 |
280 |
0.60 |
|
19mm
Televue Panoptic |
147 |
368 |
0.32 |
|
14mm TeleVue Radian |
200 |
500 |
0.3 |
|
12mm TeleVue Radian |
240 |
600 |
0.25 |
|
10mm
Celestron Plossl |
280 |
700 |
0.18 |
|
9mm Televue Nagler |
311 |
-- |
0.26 |
|
7mm Vixen Lanthanum |
400 |
-- |
0.11 |
|
* With TeleVue PowerMate 2.5 |
|
| |
|
| |
 |
| |
|
|
|
|
|
|
|
| |
AT8IN Imaging Newtonian |
|
OTA: |
AstroTech 8-inch (200mm) f/4
Newtonian telescope
(aluminum
tube) |
| Mount: |
Celestron CGE |
| |
This setup includes a Honis-modified Canon XSi DSLR
(Baader UV/IR cut filter) with a Baader Multipurpose Coma
Corrector and an ST80 refractor guidescope, piggyback mounted with AstroTech 110mm rings, with an Orion Starshooter
Autoguider.
Stock telescope collimation hardware and
ring clamps have been replaced with a custom kit developed by Kerry
Hanna, Issaquah, Washington. |
| |
|
|
 |
|
|
| |
AT72ED Refractor |
|
OTA: |
AstroTech 72mm f/6 Refractor |
| Mount: |
Celestron CGE; piggy-backed on C11
or AT8IN Used as a guidescope or as a widefield imaging scope (with AstroTech 2-inch field
flattener.) |
| |
AT72ED refractor mounted on AT8IN in imaging configuration,
with homemade 50mm guidescope mounted on dovetail rail of
CGE mount at the DAS EG Klein Dark Site, Deer Trail,
Colorado. Brooks Observatory (housing 14-in Celestron SCT)
in the background. (Red Sealtest box used as light shield
and moisture/cold protection for laptop.)
Sample image with this telescope:
Rosette Nebula |
| |
|
|
|
|
|
|
|
|
|
| |
Orion 120ST/PST Solar Telescope |
|
OTA: |
Orion 120ST (120mm f/5) Refractor (with
Orion 120mm Solar Filter)
Coronado PST 40mm
Hydrogen-Alpha |
| Mount: |
Celestron CG-5
Equatorial Head (self Re-built) with Celestron
Dual Axis Drive and Oak Tripod (Al's Astro) |
| |
 |
| |
|
|
|
|
|
|
|
|
|
|
|
|
|
Previous Telescopes |
| |
|
| |
Celestron 235mm SCT/C235 |
|
OTA: |
Celestron G -
9.25-in (235mm) f/10.0 Schmidt-Cassegrain telescope |
| Mounts: |
Celestron
CI-700 Manual Alignment (until January 2004) |
| |
Celestron CG-5
Equatorial Head (self Re-built) with Celestron
Dual Axis Drive and Oak Tripod (Al's Astro) |
| |
|
|
Eyepieces: |
| In 235mm SCT |
f/10x |
x2.5* |
FoV (deg) |
f/6.3x |
|
40mm
Celestron NexStar Plossl |
59 |
147.5 |
0.83 |
-- |
|
32mm
Televue Plossl |
73 |
182.5 |
0.68 |
46 |
|
25mm
Celestron Plossl |
94 |
235 |
0.52 |
59 |
|
18mm
Celestron Ultima Plossl |
131 |
262 |
0.38 |
82 |
|
14mm TeleVue Radian |
168 |
420 |
0.36 |
106 |
|
10mm
Celestron Plossl |
235 |
587.5 |
0.21 |
148 |
|
7mm Vixen Lanthanum |
336 |
-- |
-- |
211.5 |
|
* With TeleVue PowerMate 2.5 |
|
| |
Celestron f/6.3
Reducer-Corrector lens (reduces effective focal length
from 2350mm to 1480.5mm) |
|
Celestron G-9.25 235mm SCT
on CI-700 Equatorial Mount
(used for observing from January 2003 to January 2004) |
|
