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General Constraints
#3
(2018-12-30, 09:55 PM)theskyhound Wrote: Hello,

The FOV of an imaging system normally is two values, one for the longest part of the camera FOV and one for the shorter. If the camera FOV is square, then I suppose it could be said to be ultimately represented by a single value.

I'm trying to get at what you are really asking though. Perhaps it would help to explain that the FOV of a camera is not entered, but calculated from the number and size of the pixels plus the focal properties of the optical system.

Greg,

I have included several attachments that might help explain my confusion. But to put it simply SkyTool3 lists image size in Pixels and (Frames if DSO object is larger than the imaging system's FOV). However, SkyTools4 shows image Size in Tiles. If I understand SkyTools4 correctly, this might be the number of camera's FOV shots to encompass the image in question (X times Y tiles etc.). Example; M57 Ring Nebula picture (attachment #1) was taken with a single exposure. The setups for SkyTools 3 and 4 were as shown in (Attachments #2, 3 ,4, 5, 6 and 7). SkyTools image size comes very close to predicting this (114x114pixels) However, SkyTools4 predicts it should take 62x62 tiles, If a tile is approximately equal to my system's FOV then SkyTools4 says I cannot take a shot of M57 without using many tiles. Hence my confusion. 


Nemesis
Himesa Observatory
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Messages In This Thread
General Constraints - by Nemesis@3319 - 2018-12-30, 07:56 PM
RE: General Constraints - by theskyhound - 2018-12-30, 09:55 PM
RE: General Constraints - by Nemesis@3319 - 2018-12-31, 02:48 AM
RE: General Constraints - by theskyhound - 2018-12-31, 07:06 AM
RE: General Constraints - by Nemesis@3319 - 2018-12-31, 05:47 PM
RE: General Constraints - by theskyhound - 2018-12-31, 05:59 PM
RE: General Constraints - by Nemesis@3319 - 2018-12-31, 06:56 PM
RE: General Constraints - by theskyhound - 2018-12-31, 09:20 PM
RE: General Constraints - by Nemesis@3319 - 2019-01-01, 12:26 AM

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