a comparison of ripples in low resolution flats

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Robin Leadbeater
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a comparison of ripples in low resolution flats

Post by Robin Leadbeater »

Attached is a comparison of residual ripples (after removal of the broad continuum shape) in flats from low resolution spectrographs using different cameras
The direct comparison between the new ATIK camera ATK414 and the older ATK314L+ model on the ALPY 600 suggests that the increase in sensitivity of the new camera has not significantly increased the intensity of the already low level of ripples seen in the older camera.

Thanks to Peter Somogyi, David Boyd and Mike Potter for supplying the flats.

Robin
Attachments
spectroscopic_flat_ripples_icx285_icx825_icx694_kaf1603me.png
spectroscopic_flat_ripples_icx285_icx825_icx694_kaf1603me.png (32.05 KiB) Viewed 3107 times
Last edited by Robin Leadbeater on Tue Feb 03, 2015 6:33 pm, edited 1 time in total.
LHIRES III #29 ATIK314 ALPY 600/200 ATIK428 Star Analyser 100/200 C11 EQ6
http://www.threehillsobservatory.co.uk
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David Boyd
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Joined: Wed Dec 11, 2013 5:50 pm

Re: a comparison of ripples in low resolution flats

Post by David Boyd »

Robin,

My ICX694 chip is in a SXVR-H694 CCD camera not an ATK460.

David
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Robin Leadbeater
Posts: 1952
Joined: Mon Sep 26, 2011 4:41 pm
Contact:
Contact Robin Leadbeater

Re: a comparison of ripples in low resolution flats

Post by Robin Leadbeater »

David Boyd wrote:
My ICX694 chip is in a SXVR-H694 CCD camera not an ATK460.

Oops! sorry. Now corrected

Robin
LHIRES III #29 ATIK314 ALPY 600/200 ATIK428 Star Analyser 100/200 C11 EQ6
http://www.threehillsobservatory.co.uk
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