| Specifications |
8" |
10" |
12" |
| Optical Design |
Schmidt-Cassegrain |
Schmidt-Cassegrain |
Schmidt-Cassegrain |
| Clear Aperture |
203mm (8") |
254mm (10") |
305mm (12") |
| Focal Length Focal Ratio |
2000mm f/10(8") |
2500mm f/10 (10") |
3048mm f/10 (12") |
| Optical Coating |
MgF2 on correcting plate
(2-sides); standard aluminum on primary and secondary mirrors |
| Ultra-High Transmission Coatings (UHTC™) |
available optionally |
available optionally |
available optionally |
| Optical Tube Dimensions (dia. x
length) |
9.1" x 16.75" |
11.75" x 22" |
13.6" x 25" |
| GPS |
Sony®GPS |
Sony®GPS |
Sony®GPS |
| LNT Module |
Patented Level-North
Technology with electronic level sensor, electronic magnetic north
sensor, high-precision clock. |
| Smart Finder™ |
Red Dot viewfinder |
Red Dot viewfinder |
Red Dot viewfinder |
| Viewfinder |
8x50 |
8x50 |
8x50 |
| Telescope Mounting |
fork-type; double tine |
fork-type; double tine |
fork-type; double tine |
| Setting Circle Diameters, RA and
Dec. |
RA: 8"; Dec: 5" |
RA: 8"; Dec: 5" |
RA: 8"; Dec: 5" |
| Zero Image-Shift Micro Focuser |
optional |
optional |
optional |
| GO TO Pointing Precision
(approx.) |
5-arc mins. |
5-arc mins. |
5-arc mins. |
| Pointing Precision, High Precision Mode |
3-arc mins. |
3-arc mins. |
3-arc mins. |
| Slow-Motion Controls |
electric, RA and Dec |
electric, RA and Dec |
electric, RA and
Dec |
| #497 AutoStar Hand Controller |
PIC 16C57 microcontroller; 2 line x 16
alphanumeric character display; 20-button keypad, red LED
backlit |
| Batteries (user-supplied) |
8 x C-cells |
8 x C-cells |
8 x C-cells |
| Battery Life (approx.) |
60 hrs. |
60 hrs. |
60 hrs. |
| Onboard Celestial Object Database |
30,223 objects |
30,223 objects |
30,223 objects |
| Slew Speeds: |
RA and Dec: 1x, 2x, 8x, 16x, 64x, 128x
sidereal and 1.5°/sec., 3°/sec., 6.5°/sec. |
| Tracking Rates |
sidereal, lunar, or
custom-selected from 2000 incremental rates |
| Tube Body |
aluminum |
aluminum |
aluminum |
| Mount Castings |
aluminum |
aluminum |
aluminum |
| Primary, Secondary Mirrors |
Pyrex® glass |
Pyrex® glass |
Pyrex® glass |
| Correcting Plate/Lens |
clear water white
glass |
clear water white
glass |
clear water white
glass |
| Total Net Telescope Weight |
53 lbs. |
70 lbs. |
80 lbs. |
| Telescope Shipping Weight
(approx.) |
73 lbs. |
95 lbs. |
105 lbs. |
| Field Tripod Height all models: |
30" to 44" variable |
30" to 44" variable |
30" to 44" variable |
| Price |
$1899 |
$2499 |
$2999 |
| UHTC |
$175 |
$235 |
$295 |