Quote:
Originally Posted by Dennis
Here is a comparison of the imaging output of the ASI 174 MM and ASI 290 MM cameras using the same set up on consecutive evenings (20th and 19th Aug respectively).
Both were taken with a Tak Mewlon 210 F11.5 with a 2” Tele Vue x2 PowerMate, to give an F23, 4830mm system. They were taken on consecutive evenings.
These were cropped from the originals on a 1:1 basis. That is, 1 Pixel on the sensor = 1 Pixel on the screen using the Rectangular Marquee Tool in PS CC, set to 900x600 for each crop of Plato from the original full res frames.
I then used the “Ruler Tool” to measure the number of Pixels across Plato in each image.
Cheers
Dennis
EDIT: @Russell & Gerard, I did not use any IR Filters for either session. I must dig my IR642 out of my FW.
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Beautiful serie.
Very interesting to see the difference pixel size does. I wonder if drizzle combine with AS!3 makes any difference.
