BFL 총정리...

 

 

 

 

매번 어댑터를 빼놓고 가서 보정거리를 못맞추는 상황이... ㅠㅠ;

 

이번 기회에 촬영용 장비 BFL을 다 정리를 해놓고...

이 글을 보고, 촬영 나가기 전에 한번 체크해보자는 의미로 정리를... 

 

Telescope

 

T-1. Takahashi FCT-76

T-2. Takahashi FCT-100

T-3. Takahashi FCT-125

T-4. Takahashi e-180ED

T-5. Takahashi MT-160M

T-6. 기타 등등 장비 나중에 추가... 

 

Camera

 

C-1. QHY 268C

C-2. QHY 268M

C-3. SBIG ST-8300M

C-4. Canon 600D

 

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T-1 + reducer(전용 or sky 90 reducer)

 

- focal length : 487 mm (f/6.4)

- focal length(reducer) : 345mm (f/4.5)

- bfl with reducer : 72.8 mm (reducer + CA35 + wide mount t-ring + camera) 

  . CA35 : 16 mm (rough)

  . wide mount t-ring : 12 mm

  . camera(canon) : 44 mm

 

 

T-2, 3 + reducer(전용)

 

- focal length : 640 mm (f/6.4)

- focal length(reducer) : 460mm (f/4.6)

- bfl with reducer : 76.95 mm (reducer + 어댑터(m92-m54) + wide mount t-ring + camera) 

  . 어댑터(m92-m54)  : 20.95 mm (rough)

  . wide mount t-ring : 12 mm

  . camera(canon) : 44 mm

 

 

T-2, 3 + flattener(WO68)

 

- focal length : 640 mm (f/6.4)

- focal length(flattener) : 640 mm (f/4.6)

- bfl with reducer : 56 mm (flattener + wide mount t-ring + camera) 

  . wide mount t-ring : 12 mm

  . camera(canon) : 44 mm

 

T-4 (전용 코렉터)

 

- focal length : 500 mm (f/2.8)

- bfl with corrector : 56 mm (flattener + wide mount t-ring + camera) 

  . wide mount t-ring : 12 mm

  . camera(canon) : 44 mm

 

T-5 (+ vixen PH)

 

- focal length : 704 mm (f/4.4)

- focal length(corrector) : 668 mm (f/4.18)

- bfl with reducer : 56.5 mm (corrector + wide mount t-ring + camera) 

  . wide mount t-ring : 12 mm

  . camera(canon) : 44 mm

 

C-1. QHY 268C

C-2. QHY 268M+starlightxpress filter wheel

C-3. SBIG ST-8300M

C-4. Canon 600D

 

C-1. QHY 268C

 

- BFL : 17.5 mm

- CAA : 6 mm

- M54 AD : 13.5 mm

 

system total : 37 mm

if BFL 56 mm system, add 19 mm

 

 

C-2. QHY 268M

 

- BFL : 12.5 mm

- starlightxpress filter wheel : 29.5 mm

 

system total : 42 mm

if BFL 56 mm system, add 14 mm

 

 

C-3. SBIG ST-8300M

 

- BFL : 16.5 mm

- FW5 filter wheel : 18.9 mm

 

system total : 35.4 mm

if BFL 56 mm system, add 20.6 mm

 

 

C-4. Canon 600D

 

- BFL : 44 mm

 

system total : 44 mm

if BFL 56 mm system, add wide mount 12 mm

 

 

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Case 1 . T-1 + C-1 : FCT-76(sky90 RD) + 268C

 

72.8 mm

- 16 mm (ca35)

- 37 mm (camera system)

= 19.8 mm

 

Case 2 . T-1 + C-2 : FCT-76(sky90 RD) + 268M

 

72.8 mm

- 16 mm (ca35)

- 42 mm (camera system : with filterr wheel)

= 14 mm

 

Case 3 . T-2,3 + C-1 : FCT-100(전용 RD) + 268C

 

76.95 mm

- 20.95 mm (AD)

- 37 mm (camera system)

= 19 mm

 

Case 4 . T-2,3 + C-2 : FCT-100(전용 RD) + 268M

 

76.95 mm

- 20.95 mm (AD)

- 42 mm (camera system : with filterr wheel)

= 14 mm

 

기타 등등의 조합

 

 

희안하게... 

268C는 19mm

268M은 14mm

가 된다...

 

확인 또 확인...