Optec Lepus HD Telecompressor for 9.25 EdgeHD
Price as Configured: $295.00
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Special Considerations for C9.25 EdgeHD OTA
The Celestron C9.25 EdgeHD OTA is unique among Celestron's EdgeHD models with a slightly slower primary mirror compared to the other SCT telescopes produced. Like the other EdgeHD models, a full aperture corrector plate and 3-element corrector lens group in the baffle tube make the C9.25HD is a fully aplanatic SCT design. The C9.25HD features an optimized back-focus of 146mm and native focal ratio of about f/9.9. The field is flat with an image circle approximately 42mm in diameter.
Attaching the Lepus-HD C9.25 Edition telecompressor to the back of the OTA will yield an approximate f/6.4 light cone at the recommended on-axis back-focus distance of 96mm. The effective field of view is reduced to 28mm with some light loss beyond about 24mm which is correctable with good flat-fielding techniques. Because the C9.25HD corrector lens group is mounted very close to the end of the baffle tube at the exit port, the Lepus-HD C9.25 Edition includes a 5mm thick aluminum spacer to ensure the corrector lenses and telecompressor lens do not make physical contact.
Telescope-Side Compatibility:
- Celestron EdgeHD C9.25 large thread.
Camera-Side Compatibility:
- Lepus camera-specific mount. See table for supported cameras.
Camera Type | Tube Length (mm) | Thread | Stock No. |
Any C-mount camera with standard lens mount | 85 | C | 19399-85 |
Any CS-Mount Camera | 90 | C | 19399-90 |
Apogee D02 Housing - U47, U77, U4000, U8300 std. body | 76 | SCT | 19396-76 |
*Apogee D02 Housing - U9, U10 std. camera | 75 | SCT | 19396-75 |
*Apogee D06 Housing - U6, U9, U10, U4000 camera | 89 | SCT | 19396-89 |
Atik Instruments 4000/*11000 | 88 | T | 19392-88 |
Atik Fira M1 motorized filter wheel | 83 | SCT | 19396-83 |
*Canon DSLR Camera - Canon bayonet mount | 47 | T plus bayonet | 19392-47C |
Fishcamp Starfish | 91 | T | 19392-91 |
Meade Deep Sky Imager | 94 | T | 19392-94 |
Meade Deep Sky Imager with RGB filter bar | 77 | T | 19392-77 |
*Nikon DSLR Camera - Nikon bayonet mount | 46 | T plus bayonet | 19392-47N |
Orion StarShoot Pro | 82 | T | 17482-82 |
QSI 504 full body camera with filters | 67 | T | 19392-67 |
QSI 504 full body camera without filters | 67 | T | 19392-67 |
QSI 504 medium body camera without filters | 79 | T | 19392-79 |
QSI 504 slim body camera with filters | 88 | T | 19392-88 |
QSI 516, 532 full body camera with filters | 67 | T | 19392-67 |
QSI 516, 532 full body camera without filters | 67 | T | 19392-67 |
QSI 516, 532 medium body camera without filters | 80 | T | 19392-80 |
QSI 516, 532 slim body camera without filters | 88 | T | 19392-88 |
QSI 516WSG camera with Off-Axis guider and no filters | 52 | T | 19392-52 |
QSI 516WSG camera with Off-Axis guider and filters and standard T-thread. Note: T-thread mount must be turned down for clearance of the OAG. | 53 | T | 19392-53Q |
QSI 583WSG camera with Off-Axis guider STL 2.156x24tpi thread | 49 | STL | 19398-49 |
QSI 520 full body camera with filters | 67 | T | 19392-67 |
QSI 520 full body camera without filters | 67 | T | 19392-67 |
QSI 520 medium body camera without filters | 80 | T | 19392-80 |
QSI 520 slim body camera without filters | 88 | T | 19392-88 |
SBIG ST-7/8/9/10/2000 with CFW-10 filter wheel mounted directly on camera without face plate and with D-block | 62 | T | 19392-62 |
SBIG ST-7/8/9/10/2000 with CFW-8/8A/9 with new 0.25 inch thick front plate on camera and no D-block | 59 | T | 19392-59 |
SBIG ST-7/8/9/10/2000 new 0.25 inch thick front plate and D-block with T-Thread | 77 | T | 19392-77 |
SBIG ST-2000XCM with AO-8 | 24 | T | 19392-24 |
SBIG ST-8300 | 85 | T | 19392-85 |
SBIG ST-8300 with CFW5/8-8300 | 64 | T | 19392-64 |
*SBIG STL with 3mm thick filters | 65 | STL | 19398-65 |
*SBIG STL without filters | 64 | STL | 19398-64 |
*Starlight Xpress SXVF-H9 camera plus filter wheel | 62 | T | 19392-62 |
Starlight Xpress SXV-H9 T-thread camera | 84 | T | 19392-84 |
Starlight Xpress SXV-M25C camera | 84 | T | 19392-84 |
QHY-8 camera (T-mount depth to IR Filter=0.160" | 81 | T (short) | 19392-81 |
QHY-8L camera | 82 | T | 19392-82 |
QHY-8Pro camera (without "tile adjust ring", add 3mm to BF for ring) | 84 | T | 19392-84 |
QHY-8 camera with Orion SteadyStar | 41 | T | 19392-40 |
QHY-9 camera | 102 | T | 19392-102 |
QHY-9 camera with 2" color filter wheel | 46 | T | 19392-46 |
QHY-10 camera | 82 | T | 19392-82 |
Older Camera Mounts | |||
SBIG ST-7/8/9/10/2000 with CFW-8/8A/9 filter wheel with old 0.20 inch thick front plate and no D-block | 60 | T | 19392-60 |
SBIG ST-7/8/9/10/2000 with old 0.20-inch thick front plate on camera and D block with T-thread | 78 | T | 19392-78 |
Camera Type | Tube Length (mm) | Thread | Stock No. |
Any C-mount camera with standard lens mount | 85 | C | 19399-85 |
Any CS-Mount Camera | 90 | C | 19399-90 |
Apogee D02 Housing - U47, U77, U4000, U8300 std. body | 76 | SCT | 19396-76 |
*Apogee D02 Housing - U9, U10 std. camera | 75 | SCT | 19396-75 |
*Apogee D06 Housing - U6, U9, U10, U4000 camera | 89 | SCT | 19396-89 |
Atik Instruments 4000/*11000 | 88 | T | 19392-88 |
Atik Fira M1 motorized filter wheel | 83 | SCT | 19396-83 |
*Canon DSLR Camera - Canon bayonet mount | 47 | T plus bayonet | 19392-47C |
Fishcamp Starfish | 91 | T | 19392-91 |
Meade Deep Sky Imager | 94 | T | 19392-94 |
Meade Deep Sky Imager with RGB filter bar | 77 | T | 19392-77 |
*Nikon DSLR Camera - Nikon bayonet mount | 46 | T plus bayonet | 19392-47N |
Orion StarShoot Pro | 82 | T | 17482-82 |
QSI 504 full body camera with filters | 67 | T | 19392-67 |
QSI 504 full body camera without filters | 67 | T | 19392-67 |
QSI 504 medium body camera without filters | 79 | T | 19392-79 |
QSI 504 slim body camera with filters | 88 | T | 19392-88 |
QSI 516, 532 full body camera with filters | 67 | T | 19392-67 |
QSI 516, 532 full body camera without filters | 67 | T | 19392-67 |
QSI 516, 532 medium body camera without filters | 80 | T | 19392-80 |
QSI 516, 532 slim body camera without filters | 88 | T | 19392-88 |
QSI 516WSG camera with Off-Axis guider and no filters | 52 | T | 19392-52 |
QSI 516WSG camera with Off-Axis guider and filters and standard T-thread. Note: T-thread mount must be turned down for clearance of the OAG. | 53 | T | 19392-53Q |
QSI 583WSG camera with Off-Axis guider STL 2.156x24tpi thread | 49 | STL | 19398-49 |
QSI 520 full body camera with filters | 67 | T | 19392-67 |
QSI 520 full body camera without filters | 67 | T | 19392-67 |
QSI 520 medium body camera without filters | 80 | T | 19392-80 |
QSI 520 slim body camera without filters | 88 | T | 19392-88 |
SBIG ST-7/8/9/10/2000 with CFW-10 filter wheel mounted directly on camera without face plate and with D-block | 62 | T | 19392-62 |
SBIG ST-7/8/9/10/2000 with CFW-8/8A/9 with new 0.25 inch thick front plate on camera and no D-block | 59 | T | 19392-59 |
SBIG ST-7/8/9/10/2000 new 0.25 inch thick front plate and D-block with T-Thread | 77 | T | 19392-77 |
SBIG ST-2000XCM with AO-8 | 24 | T | 19392-24 |
SBIG ST-8300 | 85 | T | 19392-85 |
SBIG ST-8300 with CFW5/8-8300 | 64 | T | 19392-64 |
*SBIG STL with 3mm thick filters | 65 | STL | 19398-65 |
*SBIG STL without filters | 64 | STL | 19398-64 |
*Starlight Xpress SXVF-H9 camera plus filter wheel | 62 | T | 19392-62 |
Starlight Xpress SXV-H9 T-thread camera | 84 | T | 19392-84 |
Starlight Xpress SXV-M25C camera | 84 | T | 19392-84 |
QHY-8 camera (T-mount depth to IR Filter=0.160" | 81 | T (short) | 19392-81 |
QHY-8L camera | 82 | T | 19392-82 |
QHY-8Pro camera (without "tile adjust ring", add 3mm to BF for ring) | 84 | T | 19392-84 |
QHY-8 camera with Orion SteadyStar | 41 | T | 19392-40 |
QHY-9 camera | 102 | T | 19392-102 |
QHY-9 camera with 2" co |