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Author Topic: Equipment for H-alfa observation  (Read 1175 times)

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Offline bpombo

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Equipment for H-alfa observation
« on: 14:26:11, 03 April, 2010 »
Hello!
I'm from Uruguay (South-America). I'm sorry for my bad English.
I'm an amateur observer of sun. I use a baader paper filter to observe sun with a 72mm F/7.1 telescope.
I like to observe the sun in H-alfa, and i wont to know what i need for make a telescope of 90 mm approx. with a Coronado PST.
I read what you use a sky-watcher/Orion of 90mm, a Coronado PST, but you need more things ┬┐not?
Thanks for your help.

            Bernardo Pombo

Offline Nomis Elfactem

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Re: Equipment for H-alfa observation
« Reply #1 on: 15:02:19, 03 April, 2010 »
Weclome to UKAI Bernardo !

There's a lot of information in the projects section (http://ukastroimaging.co.uk/forums/index.php?topic=46573.0).  Roger modded a Vixen but the principle is the same.

In short you will need a ERF filter for the front of the scope, a few adapters, a method of focusing after the etalon and finally a blocking filter (BF10 or the like).

S.
Simon

Scopes: Astro-Tech AT-111EDT Triplet, TS65ED Quad, Orion ST80, Modded PST-90 Solar Scope, PST Cak (on loan)
Cameras: SXVF H694, Atik 16ic, Canon EOS 600d, DMK41, DMK21, QHY 5L-II (mono & colour)
Accessories: SX USB Filter Wheel, SX OAG, Baader LRGB Ha SI OII Filters, SharpSky Focuser
Mount: EQ6 (EQMOD), SW Star Adventurer, plus a lot (and I mean a lot) of other bits and pieces

Offline Merlin66

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Re: Equipment for H-alfa observation
« Reply #2 on: 15:54:09, 03 April, 2010 »
Welcome!
I'd just add, a telescope with a native f ratio of f10 or very close is required. using Barlows etc doesn't work very well.
Ken
C11, C9.25 SCT, 4" Genesis, NEQ6pro, modded 1000D,  ATik314L+, DMK41AF04, SM60DS/BF15, and Spectroscopes (many!).
http://tech.groups.yahoo.com/group/astronomical_spectroscopy/
"Astronomical Spectroscopy for Amateurs", "Grating Spectroscopes-How to Use them" -Springer

Offline bpombo

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    • Blog de Bernardo Pombo
Re: Equipment for H-alfa observation
« Reply #3 on: 19:58:38, 03 April, 2010 »
Thanks to both, you have been very nice.
The ERF filter sells is baader not?
But ... and the etalon and the BF10 who?
Do I extract these last two things of the Coronado PST?

Offline Nomis Elfactem

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Re: Equipment for H-alfa observation
« Reply #4 on: 20:08:29, 04 April, 2010 »
Hey Bernardo - yes, you extract the Etalon from the Coronado but the BF in the Coronado is only 5mm (BF5) and you'll really need a BF10 (10mm) for th emod so that you can see all the suns disk through it.

Finally, yes, the D-ERF comes from Baader !

S.
Simon

Scopes: Astro-Tech AT-111EDT Triplet, TS65ED Quad, Orion ST80, Modded PST-90 Solar Scope, PST Cak (on loan)
Cameras: SXVF H694, Atik 16ic, Canon EOS 600d, DMK41, DMK21, QHY 5L-II (mono & colour)
Accessories: SX USB Filter Wheel, SX OAG, Baader LRGB Ha SI OII Filters, SharpSky Focuser
Mount: EQ6 (EQMOD), SW Star Adventurer, plus a lot (and I mean a lot) of other bits and pieces

 

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