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QHYCCD Adapter Kits 2.0

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Accessory
QHYCCD
QHYAdapterKitA1
$32 CAD
We will price-match in-stock Canadian astronomy dealer pricing

*Size


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Adapter System 2.0 Introduction

QHY offers a very comprehensive and flexible adapter system that allows our cameras to achieve focus with a variety of accessories, including camera lens adapters, off-axis guiders, filter wheels and numerous optical systems.  The many potential combinations of these items produce an equal variety of back-focus distances that must be considered to make it all work together.  This variety and flexibility, however, also can be confusing particularly for new users.

Therefore, based on users’ feedback we have decided to include a fixed combination of adapter kits to meet mainstream needs of most users (e.g., Multi-Purpose Coma Corrector, Canon lens adapter, Nikon lens adapter, etc.). Users can choose the corresponding adapter set according to their needs to ensure focus. There is no need to measure and calculate the back focal length, choose adapters, and customize screws as before. Now we directly provide the calculated results and corresponding adapters.

A1-A3 (for 163M, 294M)

A1: Connecting MPCC that requires 55mm BFL and M48 interface to Camera with Filter Wheel and OAG

Note:

  1. If you only own CFW3M-SR whose BFL is 20.5mm rather than 17.5mm, this adapter combination can still be used, just remove the 3mm and 0.5mm adapters.
  2. If your MPCC requires a BFL different from 55mm, this adjustment can be made by selecting the appropriate spacer between the MPCC and the OAG.  For example, an MPCC that requires 57.5mm can be used instead by adding a spacer ring or rings that add 2.5mm of BFL. to the diagram above.
  3. If you don’t use an OAG, you can use a 10mm spacer adapter in the adapter kits to replace the original position of OAG.
  4. Put OAG at the position next to the M48 Output to make both main cam and guiding cam focused.

 

A2: Connect Canon lens with filter Wheel

Note: You need to remove the filter wheel and the original connection interface of the camera and replace it with a new adapter.


A3: Connect Nikon F Lens to Camera with Filter Wheel

B1-B3 (for 268M, 600SBFL)

First there’s no doubt that 2-inch filters are large enough to cover the whole sensor area, but they’re not cheap enough for everyone. With a rough estimate, we think 36mm filter can be matched with scopes whose focal ratio are smaller than f/5 (f/4 worth a try, too). However, if your scope has a large focal ratio like f/2.8, we suggest you think carefully before using 36mm filters.

Model BFL Consumed Filters Supported
QHY268M 12.5mm
CFW3M-US 17.5mm 7 position

 

36mm unmounted

CFW3L 21.5mm 7 position

 

2inch mounted/50mm unmounted

OAGM 10mm

 

Note: Adapter Kits B1 is provided FOR FREE with each QHY268M model.  B1,B2,B3,are suited for QHY268M; Adapter Kits D1 is provided FOR FREE with each QHY268C model.  D1,D2,D3,are suited for QHY268C.

 

B1-1: Connecting MPCC that requires 55mm BFL and M48 interface to Camera with CFWL and OAG

Note:

  1. If your MPCC requires a BFL different from 55mm, this adjustment can be made by selecting the appropriate spacer between the MPCC and the OAG.  For example, an MPCC that requires 57.5mm can be used instead by adding a spacer ring or rings that add 2.5mm of BFL. to the diagram above.
  2. If you don’t use an OAG, you can use a 10mm spacer adapter in the adapter kits to replace the original position of OAG.
  3. Put OAG at the position next to the M48 Output to make both main cam and guiding cam focused.

 

B1-2: Connecting MPCC that requires 55mm BFL and M48 interface to Camera with CFW3M-US Only

B1-3: Connecting MPCC that requires 55mm BFL and M48 interface to Camera with CFWM-US and OAG


B2: Connect Canon EF lens to Camera with filter Wheel


B3: Connect Nikon F Lens to Camera with Filter Wheel

Note: The current Nikon adapter used here is different from the 10mm adapter we used to provide. Now it has a back focal length increment of 12mm.

 

C1 (for 600M-PH, 600L)


C1: Connecting MPCC that requires 55mm BFL and M48 interface to Camera with CFW3L Only

Note: If you only use the filter wheel, the QHY600 standard version is enough to meet your needs. If you must use the CFWL and OAG at the same time, or use DSLR Lens, please choose QHY600 SBFL version.

 

D1-D3 (For OSC cams with APS-C and Full Frame Sensor)


Combos and Adapter Kits

Generally speaking, there’s no need for an OSC (one shot colored) camera to match filter wheel. If there’s any special needs, please refer to mono cam combos and choose the corresponding filter wheel. All OSC cams use OAG M if needed.

Model BFL Consumed
QHY600C/268C/410C/367C/128C/247C/168C 17.5mm+6mm (CAA)
OAGM 10mm

 

*About IR-Cut filter

The sealing glass of QHY OSC cameras whose format are above APS-C is AR glass instead of IR/Cut filter. That’s because when the sensor size is bigger, if IR/Cut is closed to sensor, it’s easy to cause haloing effect on image. We use IR/Cut filter as sealing glass on 4/3 format cameras or below, like 163C, 183C; as for big sensor OSC cams, such as 268C, 367C, we provide a special adapter for fixing 2-inch IR/Cut filter at a farther position from the sensor, or users can fix the filter inside the default T mount.


D1: Connecting MPCC with 55mm BFL and M48 interface

If you don’t use an OAG, please use 10mm adapter in the adapter kits to fill the original position of OAG.


D2: Connecting Canon EF Lens


D3: Connecting Nikon F Lens

E1 (for 533C, 294C, 174C)

Adapter Kit E1 can be directly connected to the 55mm BFL M48 interface MPCC, or Nikon / Canon DSLR lens (need to purchase another DSLR lens adapter). 

E1 is designed for QHY533C, 294C, 163C, 183C, 174C. Of course, if you use 163M/294M/183M/174M while a filter wheel or OAG is not needed, you can use E1 as well.

Back Focal Length Defined

Back Focal Length (BFL), in the commercial camera field, refers to the design distance from the center of the rear lens element to the surface of the sensor.  Generally, the lens will only focus correctly at infinity if the camera’s back focal length meets the standard requirements provided by the lens manufacturer.  This is also true for many Multi-Purpose Coma Correctors designed to be used on telescopes before the camera.

Optical system Back focal length required
Typical Multi-Purpose Coma Corrector 55mm – 57.5mm
Canon 35mm lens 44.1mm
Nikon 35mm lens 46.5mm

Back Focus Consumed

When an optical system requires the sensor of the camera to be located at a specific distance from the last optical element, mechanical spacer adapters are used to position the camera at the right location. If the camera system also includes a filter wheel and an OAG, for example, between the camera and the telescope, the space required for these items must be taken into account. As a simplified explanation, for example, if a telescope’s field flattener requires the camera focal plane to be 55mm behind the last optical element, and the filter wheel is 20mm thick, and the OAG is 10mm thick and the sensor is set 10mm inside the camera then these items all take up 20+10+10=40mm of the back focal distance. Still, the camera needs to be 55mm away so we need to add spacers that take up this remaining 15mm. This also means that if you have an optical system that requires 55mm of backfocus distance and your filter wheel is 25mm thick and the OAG is 20mm thick and the sensor in the camera is 17mm from the front plate, then these items take up 25+20+17=62mm of backfocus. Too much! In this case something has to go to reduce the total back focus distance of the camera to 55mm or a different optical configuration must be found.

For the convenience of calculation, all the data displayed are the increase in the back focal length taken up by using the adapter, which is not necessarily equal to the thickness of the component itself.  All the adapter data provided by QHYCCD are based on the focal length increment.

Recommend Combinations

Combos for Mono Cams

For cameras with a one-inch or smaller sensor (QHY183M/178/174/290), we recommend a combination of CFW3S-US + OAGS (optional);

Model BFL Consumed Filters Supported
QHY183M/174M/550P 17.5mm 7 position

 

1.25inch mounted /31mm unmounted

CFW3S-US 15.5mm
OAGS 10mm

 

For cameras with a sensor larger than 1-inch and smaller than APS-C (QHY163m/294m) we recommend a combination of CFW3M (US) + OAGM (optional);

Model BFL Consumed Filters Supported
QHY163M/294M 17.5mm 7 position

 

36mm unmounted

CFW3M-US 17.5mm
OAGM 10mm

 

Now we only have one APS-C Mono model—QHY268M.Fiirst there’s no doubt that 2-inch filters are large enough to cover the whole sensor area, but they’re not cheap enough. With a rough estimate, we think 36mm filter can be matched with scopes whose focal ratio are smaller than f/5 (f/4 worth a try, too). However, if your scope has a large focal ratio like f/2.8, we suggest you think carefully before using 36mm filters.

Model BFL Consumed Filters Supported
QHY268M 12.5mm
CFW3M-US 17.5mm 7 position

 

36mm unmounted

CFW3L 21.5mm 7 position

 

2inch mounted/50mm unmounted

OAGM 10mm

 

Similarly, there’s only QHY600M as full frame mono CMOS camera. For QHY600, the best match is CFW3L and OAGM. If you have special requirement for short back focal length, like using Canon EF Lens (44.1mm BFL), Nikon F Lens (46.5mm), or using 55mm MPCC with both CFW and OAG, we recommend QHY600 Short BFL version as the only choice.

Model BFL Consumed Filters Supported
QHY600M PH/Lite 17.5mm 7 position

 

2inch mounted/50mm unmounted

QHY600M SBFL 12.5mm
CFW3L 21.5mm
OAGM 10mm

 

Combos for OSC Cams

Generally speaking, there’s no need for an OSC (one shot colored) camera to match filter wheel. If there’s any special needs, please refer to mono cam combos and choose the corresponding filter wheel. All OSC cams use OAG M if needed.

Model BFL Consumed
QHY183C/163C/294C 17.5mm
QHY600C/268C/410C/367C/128C/247C/168C 17.5mm+6mm (CAA)
OAGM 10mm

 

Specifications and Prices

Model Inc. Note Retail Price/USD
Combo A1 5mm M54 to M48 Adapter*1

 

3mm Spacer*1

0.5mm Spacer*1

10mm Spacer*1

 

22mm M3 Screws*8

Standard accessory of QHY294M 40
Combo A2 10mm M54 Canon EF Adapter*1

 

4mm M54 Screwed Adapter*1

3mm Spacer*1

1mm Spacer*1

Cam Top Adapter (original name 020063)*1

 

10mm M3 Screws*8

_ 52
Combo A3

 

(Nik Adapter1)

10mm M54 Nikon F Adapter*1 _ 35
Combo B1 5mm M54 to M48 Adapter*1

 

3mm Spacer*3

1mm Spacer*1

10mm Spacer*1

 

24mm M3 Screws*8

28mm M3 Screws*8

Standard accessory of QHY268M\QHY600 Short BFL Ver. 52
Combo B2

 

(Can Adapter)

10mm M54 Canon EF Adapter*1 _ 35
Combo B3

 

(Nik Adapter2)

12mm M54 Nikon F Adapter*1

 

0.5mm Spacer*1

_ 40
Combo C1 5mm M54 to M48 Adapter*1

 

7mm Spacer*1

 

14mm M3 Screws*8

Standard accessory of QHY600M-PH 25
Combo D1 5mm M54 to M48 Adapter*1

 

2.5mm 2inch Filter Fixer

(Original Name 020055)

10mm Spacer*1

14mm Spacer*1

 

 

36mm M3 Screws*8

 

Standard accessory of QHY600C

 

QHY268C

40
Combo D2 10mm M54 Canon EF Adapter*1

 

4mm M54 Screwed Adapter*1

2.5mm 2inch Filter Fixer

(Original Name 020055)

3mm Spacer*1

1mm Spacer*1

 

14mm M3 Screws*8

_ 58
Combo D3 10mm M54 Nikon F Adapter*1

 

4mm M54 Screwed Adapter*1

2.5mm 2inch Filter Fixer

(Original Name 020055)

3mm Spacer*2

0.5mm Spacer*1

 

16mm M3 Screws*8

_ 58
Combo E1 Under Developing TBD TBD
M42 All-in-one Kit

 

(Available Soon)

8mm M42 to M48 Adapter*1

 

3mm M42 Screwed Adapter*1

Cam Top Adapter (original name 020063)*1

 

0.5mm/1mm/2mm/3mm/7mm/10mm Spacer*1

 

21mm M3 Screws*8

10mm M3 Screws*8

12mm M3 Screws*8

60
M54 All-in-one Kit

 

 

5mm M54 to M48 Adapter*1

 

3mm M54 to M42 Adapter*1

2.5mm 2inch Filter Fixer (Original Name 020055) *1

4mm M54 Screwed Adapter (Original name 020070)*1

Cam Top Adapter (original name 020063)*1

0.5mm/1mm/2mm/3mm/7mm/10mm/14mm Spacer*1

 

8mm M3 Screws*8

10mm M3 Screws*8

12mm M3 Screws*8

14mm M3 Screws*8

16mm M3 Screws*8

21mm M3 Screws*8

24mm M3 Screws*8

28mm M3 Screws*8

36mm M3 Screws*8

50mm M3 Screws*8

135

 

About IR-Cut filter

The sealing glass of QHY OSC cameras whose format are above APS-C is AR glass instead of IR/Cut filter. That’s because when the sensor size is bigger, if IR/Cut is closed to sensor, it’s easy to cause haloing effect on image. We use IR/Cut filter as sealing glass on 4/3 format cameras or below, like 163C, 183C; as for big sensor OSC cams, such as 268C, 367C, we provide a special adapter for fixing 2-inch IR/Cut filter at a farther position from the sensor, or users can fix the filter inside the default T mount.

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