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chaz2b

Setting up/constructing my first solar scope, advice needed.

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I want to construct and setup a solar scope, possibly with what I have, this includes a lunt B400 (so need my scope to be 400mmFL) to that end I only have a Orion 80mm Short tube rich field.

I also have Daystar Quarks, Chrom`and Prom` plus a Quantum SE, they require power.

Using either, if I keep to small apertures, do I really need a front ERF or will a Baader UV/IR-Cut/L filter in front of the diagonal work?

I find some of these terms a little confusing, having seen elsewhere when different terms are used, but mean the same!

I have seen an ERF used in front of the objectives, but also used in front of the diagonal as well, that means the objective was unprotected, is that still safe?

With the Daystars quarks, blocking filter and Barlows are built in, and is then placed after the diagonal, generally it says you can use the scope as is, without an ERF as long as it`s 80mm or less aperture.

As it`s my first foray into solar viewing with these kind of filters,( I do have white Baader filters), so real safe advice is what I need.

 

BTW, I aslo have a Yellow glass filter, in an Aluminium mount, that mounts in front of the objective, but has no markings on it, would this be an ERF too?

 

Wow! it turns out that it IS an ERF by Daystar, arn`t I a lucky boy! Took it all outside for my ifrst viewing, I only used a Celestron 25mm Plossel, so all I got was a great big orange...well not such a great big, but you get my drift. No real detail as some of you regular Solar viewers would probably agree, but heyho.

 

chaz

 

 

Edited by chaz2b

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Hello,

 

I have a TV 85 and a Quark.  Works wonderfully with a Cut I/R filter in front of the diagonal.  I bought the filter from Daystar at the same time I purchased the Quark and paid about $120 or so.  

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Hi there,

 

Is that viewing without an ERF before the objectives? if so, did the tube get hot at all ?or did you use short viewing times?

The yellow ERF I`m using  is well taped to the front so as not to fall off accidentally, although the size of the sun is smallish with the 25mm. I tried it with an LV 2.5mm, really close! phew! almost got burnt...lol. But can only look for short bursts as the sun blurs with any slight movement.

Took it up the road to show the neighbours kids, they all loved it, as they have never seen the sun like that .

 

chaz

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You can use a uv/ir cut filter on the diagonal before the Quark or using an ERF on front of the lens will be safe with the Quark the ERF  is usually used on scopes 120 or above with a Quark but can be used on scopes under this 

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Using a Baader 2” 35 nm on the diagonal is fine in my experience even at 152mm , but not a UV/IR cut.

 

The yellow Daystar ERFs actually only block UV and not IR !! , I previously had one but cannot recommend them.

 

Brian 

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46 minutes ago, Solar B said:

Using a Baader 2” 35 nm on the diagonal is fine in my experience even at 152mm , but not a UV/IR cut.

 

The yellow Daystar ERFs actually only block UV and not IR !! , I previously had one but cannot recommend them.

 

Brian 

+1, this is exactly my experience as well.

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Why not? I'm using one because I have it, just as an insurance from the tube heating up. Could you explain as to why you don't recommend using it?

 

Chaz

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