Monthly Archives: August 2014

Coronado PST BF5 positioning mod

A few days ago I posted about the problems with vignetting when imaging with a PST and decided that for me a solution might be to move the BF5 unit as close to the camera sensor as possible so that … Continue reading

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Astro EQ conversion of EQ3-2 (part 2)

I ordered some aluminium channel (1″x2″x1/8″) to make up the RA motor mount which arrived yesterday. I chose this size because there’s only one mounting hole for each of the normal aftermarket motors on the EQ3-2 and this would give … Continue reading

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MythTV upgrade to 0.27

Everyone else is away for a couple of days so I took the opportunity to upgrade our Mythbuntu installation from 0.26 to 0.27 last night.  It turned out much simpler than I expected.  We have a backend and several frontends, … Continue reading

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Astro EQ conversion of EQ3-2

I decided today that it’s about time I extracted a digit and got on with converting my old EQ3-2 “Sky Scan 2001” mount to GOTO using Tom Carpenter’s rather nice AstroEQ box. Although I already have the aftermarket motors fitted, … Continue reading

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Shoddy Coronado PST build quality

The constant rain this weekend meant indoor activity was called for, so I started work on my new PST mod to move the BF5 filter closer to the camera in an attempt to reduce or perhaps even completely remove the … Continue reading

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Swimming pool solar heating system

When we bought our current house quite some years ago, it had a reasonable size “in ground” swimming pool that was suffering a bit from lack of maintenance.  The re-made ground around the pool had settled over the years and … Continue reading

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Coronado PST eyepiece holder disassembly part 2

I got brave this evening and disassembled the eyepiece holder to the point I’d reached as described a few days ago. I then examined the BF5 housing and decided that it appeared to fit into the eyepiece holder from the … Continue reading

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When life gives you lemons, make lemonade

But when it gives you apples, make cider… And to that ends I’ve just taken delivery of a new apple “scratter” for pulping apples before pressing them to extract the juice.  I used to use a manual crusher, but it’s … Continue reading

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Coronado PST eyepiece holder disassembly

Following on from my thoughts that I might have to move the blocking filter on my modded PST closer to the camera sensor, I decided to take it apart to see what I might be dealing with.  Though I’ve got … Continue reading

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Another possible PST mod

My PST has been repeatedly modded and now looks like this: (though now with the addition of a motor to the focuser.) I have been pondering of late however on the amount of vignetting that occurs when imaging and what … Continue reading

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