Saturday, April 21, 2007

Cloudy exercise

It is cloudy again when it's saturday and sunday, let's don't give up until the last minutes, to see if we can have some chance to shoot.

The below were calculated based on my DMK 31AF03 and Borg 45ED II, it's nice to find that with a 2x barlows, full disc solar shot can be covered by 2*2 mosaic indeed with reasonable overlapping, when there's chance, I shall try it out! mosaic is the best way to get even illumination for H-alpha solar imaging.

1/3" CCD
CCD pixel 4.65 4.65
CCD resolution 1024 768
CCD size 4761.6 3571.2
Pixel area 21.6225

target size 33 33

Aperture 40 40
f 325 325
f * 2 650 650
f * 3 975 975

FoV 50.37 37.78
FoV * 2 25.19 18.89
FoV * 3 16.79 12.59

Sampling 2.95 2.95
Sampling * 2 1.48 1.48
Sampling * 3 0.98 0.98

Target resolution 670.81 670.81
Target resolution * 2 1,341.61 1,341.61
Target resolution * 3 2,012.42 2,012.42

mosaic 0.66 0.87
mosaic * 2 1.31 1.75
mosaic * 3 1.97 2.62

daws limit 2.9 2.9

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