Sun 6/11/12

[RichardJ]

Hi,

I've been practising doing some afocal photography with my Coronado PST on a camera tripod and my Canon 450D in preparation for the Eclipse. It's very quick which may be the order of the day if I'm moving around looking for a clear spot.

Details. Composite of 2 shots. One at 1/25sec for the prominences and one at 1/80 sec for the disk (both ISO 200). Processed in CS5.

Good luck to all on the day. :thumbsup:

RichardJ :)

[barx1963]

That is an excellent result Richard. Well done! Was it hand held?

Malcolm

[Larryp]

Ditto!:thumbsup:

[RichardJ]

Hi Malcolm,

Thanks. The camera was hand held.

regards,

RichardJ

[Shark Bait]

That is a good result with the PST, especially being hand held.

A while ago I hired a PST and tried some afocal photography with it. I did not expect great results and it turned out that way. I could not achieve focus at the camera.

Can you provide more detail on how you got the shot please?

What type of camera did you use?

[Matt Wastell]

You will get some good eclipse shots with that setup!

[RichardJ]

Hi Stu,

Camera is a Canon 450D. I use a Lunt variable power eyepiece (bit I think it would work with a Plossl). For the prominences I took a 1/25 sec exposure ISO 200; eyepiece focal length 21.5mm. First, focus the telescope; I wear glasses so I focused with my glasses on. Canon lens set to 24mm and then manually focus the camera on something distant e.g. a far away tree. Then hold the camera right up to eyepiece, look through the view finder and try and to get even illumation of the Sun's disc. Then take the picture.

For the disk I use about 17mm on the Lunt eyepiece and 35mm on the Canon. Same procedure but exposure 1/80sec. The rest is done in Photoshop. There are probably other combinations but this one worked for me. Hope this helps.

regards,

RichardJ :)