Emiel Kempen - Astrofotografie

Eenheid

Formule

Pixel Scale

arcsec / pixel

206.265 * pixel size in μm / focal length in mm

Pixel Array Dimension

μm

number of pixels * pixel size in μm

FOV

arcmin

(3438 arcmin * (number of pixels * pixel size in μm)) / focal length in μm

Lodestar

ST10

40D

60D

SXVHR-H18

Pixels H

752

2184

3888

5184

3326

Pixels V

580

1472

2592

3456

2504

PixelSize H

8.2

6.8

5.7

4.3

5.4

PixelSize V

8.4

6.8

5.7

4.3

5.4

Chip H

6.4

14.9

22.2

22.3

17.96

Chip V

4.75

10

14.8

14.9

13.52

ST10 + F/4

ST10 + F/2.9

40D + F/4

40D + F/2.9

60D + F/2.9

60D + F/2.9 Pulse

FOV H

51

69

76

104

102

102

FOV V

34

47

50

69

68

68

Image Scale

1.393

1.908

1.168

1.600

1.180

1.180

75% van Image Scale

1.045

1.431

0.876

1.200

0.885

0.885

3 x 75% van Image Scale

3.134

4.294

2.627

3.599

2.655

2.655

1.00 x GuideRate Min Move

0.035

0.048

0.029

0.040

0.029

0.44

1.00 x GuideRate Max Move

0.208

0.285

0.175

0.239

0.176

2.65

0.75 x GuideRate Min Move

0.047

0.063

0.039

0.053

0.039

0.44

0.75 x GuideRate Max Move

0.277

0.380

0.233

0.318

0.235

2.65

0.50 x GuideRate Min Move

0.070

0.095

0.059

0.080

0.059

0.44

0.50 x GuideRate Max Move

0.416

0.570

0.350

0.477

0.352

2.65

0.25 x GuideRate Min Move

0.140

0.190

0.117

0.160

0.117

0.44

0.25 x GuideRate Max Move

0.832

1.141

0.699

0.955

0.705

2.65

50 mm zoeker

50 mm zoeker barlow

60 mm zoeker AM

60 mm zoeker TS

80 mm zoeker TS

Aperture

50

50

60

60

80

Focal Length

176

352

228

240

328

F

3.52

7.04

3.8

4

4.1

Weight

640

563

1300

FOV H

120

60

93

88

65

FOV V

95

48

73

70

51

Image Scale met Lodestar

9.844

4.922

7.599

7.219

5.282