Sun 23 March with PST90mm mod - first ligh.

[AstroFlyer]

Here are some first images from my PST 90mm mod.
Just testing my set up...

[h0ughy]

wow looks very promising Arek? The mods made a big difference

[AstroFlyer]

Yes they did, especially that my PST's front objective was totally stuffed by "PST rust".
Much better resolution & contrast.
It's a stage 1 mod (thanks Ken:thumbsup:) - Skywatcher 90mm F10 with 90mm Baader ERF-D & PST etalon/black box.
Next stage is making few adapters to accommodate Coronado BF10 or BF15 instead of PST box.
Will post some pictures of the mod in DIY section soon.

[Merlin66]

Well done - good start.
You should be able to pump up the magnification a bit more x2.5 - you may need the Vegemite lid micro focuser upgrade to improve your focus.
Onwards and upwards!

[AstroFlyer]

Focus seems to be the problem Ken.
I opened PST's box & it seems the prism is out of alignment.
I guess will have to go to stage 2...:D

In a meantime I am playing with AviStack.
Seems to be doing better job with fine details then Registax.

[Merlin66]

If the prism is bad, it may be worthwhile ripping it off and re-gluing in a better alignment...you can't make it any worse....
Have you tried Registax V6 yet???

[Matt Wastell]

Great stuff Arek!
Looking forward to more!

[AstroFlyer]

Thanks Matt.



Thought about fixing the prism, but probably won't bother.
I have BF10 here, all i need is to make the connectors.
Having some problems finding the aluminium here- local suppliers want to sell me 3.6m lenghts :eyepop:

Tried Registax V6 very briefly, not sure if I like it.
Guess need more time with it, but so far Avistack seems to be giving me better results.

[Merlin66]

If you use an SCT - 2" adaptor behind the etalon, a couple of 2" extension pieces and then a Baader helical focuser from T thread to 1.25" that would get you down to the BF diagonal...I think the distance from the back of the etalon to the BF10 is 120mm - I can double chcek if you need a precise dimension.