[Colorado CJ]

I just ordered a Rokinon 500mm F6.3 mirror lens from Overstock for $119.00

I think it should do pretty well on the moon/astrophotography since it is essentially a small catadioptric telescope. Now I just need a decent tracking mount for long exposures

[zelovoc]

my first moon shot with k200d and da 55-300 @ 300mm with tripod and remote shutter

[fiveseven]

K-x with Tair 3PhS + x2 Russian teleconverter on Photosniper stock leaning against the car.
No stacking, cropped to some degree and sharpened a bit.

[Colorado CJ]

I received my Rokinon 500mm F6.3 mirror lens today. I'm actually impressed with the build quality and the optical coatings for such a cheap lens (I paid $119.00).

I only got to use it for about 2 minutes between clouds tonight, so I don't have any good pictures.

I know this is a Moon thread, but I won't have a moon to shoot for a few days at least. So, here is a quick shot I took of Jupiter. Note, this is over exposed and I didn't have much chance to fool around with settings because of the clouds. This will give you some idea of scale size with a 500mm lens though.

100% crop



I think this lens has some potential. When I have a clear night, I'm going to try shooting at higher exposures to bring out the moons, then shoot a series of lower exposures for Jupiter itself and stack them. I think with this lens, I should be able to get nice detail and banding on Jupiter itself. We'll see.

[JeffJS]

[k54]

My share using the 55-300 DAL ED Kit lens Hand Held, Pentax K-x @ 300mm, F/8, 1/400 sec., ISO 400, Center Weighted Ave., Manual Exposure, 0 step Exposure Compensation.

[Colorado CJ]

Well I finally had a decent night to shoot a couple of moon pics with the Rokinon 500mm F6.3 mirror lens.

It is a little hard to get a good focus as a very small amount of movement makes the image out of focus. I use live view at 10X to try to get a decent focus.

I didn't get it just right yet, but here is what I have so far. The first shot is of the full moon itself.



And this is a 100% crop of the image. I didn't want to put the full image up since it would be too large and you'd have to scroll around. 500mm makes a pretty large image scale on the APS-C size sensor! Note, either I didn't get the focus quite right, or it might be a bad night for "seeing", I don't really know as I didn't spend much time out side (too cold).

[liam]

tamron 70-200
200mm is too short for moon
https://www.pentaxforums.com/forums/attachments/10-pentax-slr-lens-discussion/75931d1289633698-shooting-moon-sg105516.jpg

[DanielT74]

Wow! Awesome Moon Shots!

[excanoneer]

Any tips for to help shooting the Lunar eclipse tonight?

[bergmania]

This evenings halfmoon, tried v6 of RegiStax .. 10 images stacked.. K7 anf a RMC Tokina 400/5.6 @f8

[akanarya]

This evenings halfmoon, tried v6 of RegiStax .. 10 images stacked.. K7 anf a RMC Tokina 400/5.6 @f8

can you share the registax procedure? weird soft without tutorial afik.

[Laurentiu Cristofor]

My best effort so far:

3/19/2011 (click through for larger size):

[Stone G.]

May I join in? My Pentax K200D + Tamron SP 350 mm f/5.6 (Model 06B) + Tamron 01F Teleconverter + Tamron SP F-series Teleconverter provided this on 9 April 2011:



Total focal length is 1400 mm; 10 images at 1/´6 sec and 10 images at 1/10 sec stacked in Registax. The image is un-cropped. Click on image to see larger version.

Speaking about Registax:

can you share the registax procedure? weird soft without tutorial afik.

There are a great many manuals out there on the internet. Just Google registax + tutorial and you will find them. Here is a very straigthforward one to get started:

Registax Tutorial

B.R. / Steen G. B.