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NextGEN 3" Mounting Plate Finder

These mounting plates fit on the back dovetail of the NextGEN 3" and are secured in place by three setscrews located in the mounting plate 120 degrees apart. It is important that the back-focus distance be set as closely as possible for the NextGEN reducers which is why each mounting plate has a unique length for every model camera. Backfocus distance should be known to +/- 0.04 inch (1mm) for best performance. Use the table below to find the appropriate mounting plate for your camera. If your camera is not listed below and you know the back-focus (BF) distance and thread type for your camera, you can find the stock number as follows:

  1. Take the base stock number for your camera's thread:
    T-thread #17482
    STL #17483
    ALTA #17484
    Pentax-thread #17485
    SCT-thread #17486
    Canon EF #17487
    Tube #17489
  2. Add a dash
  3. Add the tube length, which is equal to 3.276 - BF, with BF measured in inches.

Note: For 3" NextGEN Telecompressors, the minimum tube length available is 1.41 inches for the STL, ALTA, and 3x24tpi mounts, 66 inches for Tube mounts, and 88 inches for C-Thread, T-Thread, Pentax, SCT, Canon EF, and 72x1mm.

Camera Type Tube Length (in) Thread Stock No.
Apogee D02 Housing - U6, U9, U10 std. camera 2.11 SCT 17486-2.11
Apogee D05 Housing - U2 low-profile camera 2.55 ALTA 17484-2.55
Apogee D06 Housing - U6, U9, U10, U4000 camera 2.67 SCT 17486-2.67
Apogee D07 Housing - U16, U16M, U9000 std. camera 2.00 ALTA 17484-2.00
Apogee D09 Housing - U16, U16M, U9000 high-cooling camera 1.61 ALTA 17484-1.61
Apogee D10 Housing - U43 std. camera 1.79 ALTA 17484-1.79
Apogee D11 Housing - U16, U16M, U9000 low-profile camera 2.43 ALTA 17484-2.43
Canon 20D DSLR Camera - Bayonet mount 0.96 Canon EF 17487-0.96
FLI MicroLine Cameras 2.29 Tube 17489-2.29
FLI ProLine Cameras With 65mm Shutter 2.09 Tube 17489-2.09
Orion StarShoot Pro 2.53 T 17482-2.53
QSI 583 full body camera with filters 1.18 T 17482-1.18
SBIG ST-10 with CFW-10 and D-block
1.69
T
17482-1.69
SBIG ST-10 with D-block
2.21
T
17482-2.21
SBIG ST-10 with CFW-10, front plate and D-block
1.44
T
17482-1.44
SBIG ST-7/8/9/10/2000 with new 0.25 inch thick  front plate on camera and D-block with T-thread
2.12
T
17482-2.12
SBIG ST-7/8/9/10/2000 with old 0.20-inch thick front plate on camera and D block with T-thread
2.17
T
17482-2.17
SBIG ST-7/8/9/10/2000 with CFW-8/8A/9 filter wheel with new 0.25 inch thick front plate and no D-block
1.41
T
17482-1.41
SBIG ST-4000 with D-block 2.21 T 17482-2.21
SBIG ST-8300 1.70 T 17392-1.70
SBIG ST-8300 with CFW5/8-8300 0.89 T 17392-0.89
SBIG STL with 3mm thick filters 1.71 STL 17483-1.71
SBIG STL without filters 1.67 STL 17483-1.67
SBIG STL with FW-8, filters, 3-bolt pattern 1.36 STL 17483-1.36
Starlight Xpress SXVF-H35 & -H36 2.49 72x1mm 17488-2.49
Starlight Xpress SXV-H9 camera
2.41
T
17482-2.41
Starlight Xpress MX & HX series
2.41
Pentax
17485-2.41
QHY-8 camera 2.30 T 17482-2.30