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Transit of Mercury in the Spicule Layer. Phil took this great image with his Quantum 6 Scope, Solar Spectrum etalon and PGR Camera.
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PST labels / PST tubes

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Merlin66
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Re: PST labels / PST tubes

Post by Merlin66 » Thu Nov 15, 2018 12:49 am

Second image with the larger "PST" and brass tube is the older "original".
The "Gold" anodised tube is a recent change....
Many of the older "Gold" objective PST's with lower serial numbers were upgraded (under warranty) to the "Blue" objective and ITF in the eyepiece tube, so it's difficult to go by just the serial.
(You may also find differences in the height of the eyepiece holder....some were 5mm longer than others, making fitting cameras even more difficult.)
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pedro
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Re: PST labels / PST tubes

Post by pedro » Fri Nov 16, 2018 9:26 pm

I have two older PST with "blue" objectives
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Merlin66
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Re: PST labels / PST tubes

Post by Merlin66 » Fri Nov 16, 2018 9:40 pm

Pedro,
The second dismantled PST looks like it has the “gold” objective??
"Astronomical Spectroscopy - The Final Frontier" - to boldly go where few amateurs have gone before
https://groups.yahoo.com/neo/groups/ast ... scopy/info
"Astronomical Spectroscopy for Amateurs" and
"Imaging Sunlight - using a digital spectroheliograph" - Springer
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pedro
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Re: PST labels / PST tubes

Post by pedro » Sat Nov 17, 2018 1:07 am

Yes it does Ken, it was my first PST
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