17th Aug White Light (for a change!)

[Macavity]

Thought I'd have a go at White light for a change!

Altair Astro 66/400, Baader ASSF filter, ASI120MM etc.
2x1 matrix (It doesn't quite fit on the smaller chip!)
(Shame about the dust bunnies-- Working on a flat)

Coloured and messed with...



Not much success with the Barlowed close ups... Who knows? lol 

[johnfosteruk]

Nice detail captured there Chris, shame about the close ups.

[David Smith]

Lovely white light disks.

[xtreemchaos]

great shots Chris, darn dust bunnys, i rub mine out in photoshop when i get them,my 450d was terrible for them "like watership down some days", i dont get as many with the 1200d. well done,  charl.

[Pete Presland]

Very nice you should do them more often. 

[Davey-T]

Looking nice and spotty.

Dave

[Macavity]

3 hours ago, xtreemchaos said:

...was terrible for them "like watership down some days"...

I shall definitely remember that one, Charl!  lol.

And thanks again everyone! Not quite sure what went wrong with the Barlowed closeups - The focus 
seemed very soft. But, as ever, some of that might have been the "seeing" rather than the optics!

<begin wibble>

Still caught on the horns of a dilemma re. Barlows. My preferred solution would be a 2.5x Powermate.
But I wonder... would that be too much magnification for even my 66/400mm ED APO in white light?
Can the Powermate be used with my Lunt 50 THa, which has little enough in-focus... Notwithstanding
my complex system of rotators/spacers to minimise non-uniformity of the sweet spot / illumination!

If anyone does have a 2.5x Powermate or even the standard Televue 2x and 3x Balows,
I make the following observation(s) - And have the following basic / implied questions:

1. It seems to me that all Teleview "Barlows" are of "longy" (rather than shorty) design? lol
I sense that the Lunt 50THa needs a Barlow with a short nosepiece, rather than a long one!

2. Failing the above, is it possible to unscrew the nosepiece (sacrilege, I know!!!) from the
Teleview Barlows? I can then use the optics in my own system of spacers / rotators above!

The above is probably thoroughly incomprehensible, but clearly others are also in a
similar position re. creating a workable Barlowing system for the Lunt 50 Tha here.  

</end wibble>