Spectroscopy Section » Kensington glass plates

Amateur Astro Imaging South West � Day to day chats � Spectroscopy Section � Kensington glass plates

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#1 | Kensington glass plates datum

Sat Oct 18, 2014 1:23 pm

I have succeeded in doing a non-linear calibration on three of the glass plates from the Kensington - alpha lyrae, alpha cygnai and gamma cas.
I have uploaded them into the picture gallery. Interesting to see how much further into the blue end the prism images than our equipment.
Kate

NEQ6 mount, C6 telescope with skywatcher guide scope for moving around with Starlight SXVR H9 main camera and SX auto guider.
Celestron C9.25 and WOZ 72 in dome with atik 460 camera and a Co-star for guiding with alpy for spectroscopy.
MCT5 with SE mount and SXVR MX 916 camera and star analyser for spectroscopy

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#2 | RE: Kensington glass plates datum

Sat Oct 18, 2014 5:17 pm

Well done, Kate. Could be thought of as an historic moment!
Allan

Equinox ED80 and 66, HEQ5 Pro, Atik 460EX, 314L and Titan; Skywatcher 200P FlexTube GOTO; Celestron NexStar 4SE; Lunt LS60THa/B1200CPT Solar, DMK41, ZWO ASI290MM & 120MM-S

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#3 | RE: Kensington glass plates datum

Sat Oct 18, 2014 8:22 pm

Very useful. Also a very sharp cut-off at 5000 A. I think that was because the plates they used were very blue sensitive. Doesn't look lik they could record h alpha.
David

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#4 | RE: Kensington glass plates datum

Sat Oct 18, 2014 8:44 pm

The McClean one are different to Kensington. I haven't tried any of them yet, but yes Jensington is all blue end. Quite amazing how much further they can see into the purple bit

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