Brook Mar Observatory Optical Configurations

Telescope

Optical Configuration

Optical Configuration

S2 Distance

Magni-fication

System Focal Length

f ratio

Camera

Image Resolution (Arcsec/pixel)

Field of View (Arc minutes)

Links To Collimation Data

Takahashi 102S Refractor
Prime Focus
Baseline
n/a
1
816 mm
8.0
ST2000XM
1.87 arcsec/px
50 arcmin
37 arcmin
 
Takahashi 102S Refractor
Prime Focus
Field Flattener
n/a
0.98
800 mm
7.8
ST2000XM
51 arcmin
38 arcmin

Collimation

Flat Field Map

Takahashi 102S Refractor
Prime Focus
Reducer
n/a
0.75
610 mm
6.0
ST2000XM
67 arcmin
50 arcmin

Collimation

Flat Field Map

Takahashi 102S Refractor
Prime Focus
2X Powermate
n/a
2
1632 mm
16.0
ST2000XM
.94 arcsec/px
25 arcmin
19 arcmin
 
Takahashi 102S Refractor
Prime Focus
4X Powermate
n/a
4
3264 mm
32.0
ST2000XM
.47 arcsec/px
12 arcmin
9 arcmin
 

Telescope

Optical Configuration

Optical Configuration

S2 Distance

Magni-fication

System Focal Length

f ratio

Camera

Image Resolution (Arcsec/pixel)

Field of View (Arc minutes)

 
Orion XT-12 Newtonian
Prime Focus
Baseline
n/a
1
1500 mm
4.9
ST2000XM
27 arcmin
20 arcmin

Collimation

Flat Field Map

Orion XT-12 Newtonian
Prime Focus
Paracorr/FF (1.15X)
n/a
1.15
1725 mm
5.7
ST2000XM
24 arcmin
18 arcmin

Collimation

Flat Field Map

Orion XT-12 Newtonian
Prime Focus
2X Powermate
n/a
2
3000 mm
9.8
ST2000XM
.51 arcsec/px
14 arcmin
10 arcmin
 
Orion XT-12 Newtonian
Prime Focus
4X Powermate
n/a
4
4500 mm
19.7
ST2000XM
.25 arcsec/px
8 arcmin
6 arcmin
 

 

 

Camera Lense

System Focal Length

Camera

Image Resolution (Arcsec/pixel)

Field of View (Degrees)

 
None/Piggy Back
24- 85 mm Zoom Lense
24 mm
Canon 300D
64. arcsec/px
54 deg
36 deg
 
None/Piggy Back
24- 85 mm Zoom Lense
85 mm
Canon 300D
18. arcsec/px
15 deg
10 deg
 
None/Piggy Back
100-300 Telephoto Zoom Lense
100 mm
Canon 300D
15 arcsec/px
13 deg
9 deg
 
None/Piggy Back
100-300 Telephoto Zoom Lense
300 mm
Canon 300D
5. arcsec/px
4 deg
3 deg
 

Camera

Pixel Size

Chip Size (pixels)

Chip Size (mm)

Canon 300D
7.4 microns
3072
2048
22.7 mm
15.2 mm
ST2000XM
7.4 microns
1600
1200
11.8 mm
8.9 mm
DBK-21AU04.AS
5.6 microns
640
480
4.6 mm
3.97 mm
 
Technical Notes

 

© All Images Copyright 2003 - 2015 Brad Bates

Brook Mar Observatory

Images of the Cosmos by Brad Bates