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Message ID: 14663     Entry time: Tue Jun 11 00:25:05 2019
Author: Kruthi 
Type: Update 
Category: Cameras 
Subject: GigE setup 

[Kruthi, Milind]

Today, with Milind's help, I installed the analog camera into the MC2 enclosure [picture attached]; but it is not yet focused. We replaced the bulky angular bracket with a simple one, this saved a lot of space inside and it's easier to align other components now. I'll finish setting it up tomorrow.


Telescope design for MC2:  Instead of using two 3" long stackable lens tubes (SM2L30), we can use one 3" lens tube with an adjustable lens tube (SM2V10), as shown in the picture. This gives a flexibility to change the focal plane distance by 1" and also reduces the overall length of telescope from 9 inches to 6-7 inches. I decided to use two 150mm biconvex lens instead of a combination of 150mm and 250mm lenses, as the former combination results in lower focal plane distance for a given distance between the lenses.

Specifications of current telescope system (for future reference):

Focal length of lenses used  150mm & 150mm
Distance between the lenses 1cm - 2cm (Wasn't able to make more accurate measurement)

With the above telescope, assuming the MC2 mirror to be at a distance of approx 75cm, the focal plane distance will range from 7.9cm to 8.1cm. Using the adjustable lens tube, we can further make the fine adjustment.

Attachment 1: MC2_analog_setup.jpg  104 kB  Uploaded Tue Jun 11 01:41:15 2019  | Hide | Hide all
MC2_analog_setup.jpg
Attachment 2: telescope.pdf  935 kB  Uploaded Tue Jun 11 03:43:21 2019  | Hide | Hide all
telescope.pdf
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