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OK, I finally got around to hooking the D70 up to my 25cm Newtonian telescope, and below are a couple of photos. Newtonian focus is 1040mm focal length, and for the 2nd more detailed image of the Southern heavily cratered area I slipped in the TC-201 teleconverter for a bit of whats technically known as negative projection Exposures of 1/1600 and 1/400 respectively, @ ISO200.
Enjoy!





Gordon

Gorgeous! ...but I thought the moon was much older than that?

One of the great things about this forum is even if you don't have a crtitique for a shot, you learn techniques and get ideas from others. Thanks for posting this

Great detail Gordon

nice shots - where do you get these adapters to connect your scope to your camera?

Stunning imagery!

Thanks all.

mattson wrote:nice shots - where do you get these adapters to connect your scope to your camera?

Any shop that sells telescopes (apart from department stores/chemists and other purveyors of toy telesopes that is) will have them. In Sydney I'd recommend the Binocular and Telescope Shop.

Gordon

Lovely stuff Gordon. Thanks for sharing.

Can you explain what you meant by negtative projection ?

Alpha_7 wrote:Lovely stuff Gordon. Thanks for sharing.

Can you explain what you meant by negtative projection ?

A teleconverter is a negative lens, ie you cant form an image with it alone as it causes the rays to diverge. When it intersects a converging cone of rays it reduces the amount of convergence, effectively converting it to a longer focal length. Its one of the main means of increasing the effective focal length of a telescope. For greater increases in fl, eyepeice projection is generally used- its necessary for photos of the planets if you want to see any detail. Typical fl's for Jupiter, Mars, Saturn etc are 20000mm and up!

Gordon

Thanks for the explanation Gordon! Look forward to more of your shots.

Nice work Gordon.
Thanx for the techo commentary also.

Very nice and clear. That is something I have always wanted to do. are you out of the city much? if not, does the brightness of the night sky effect the detail of the shots?

Great shots Gordon, very enjoyable stuff.

For anyone else wishing to photograph the moon, Gordon has posted some good stuff on a previous post here:

http://www.dslrusers.net/viewtopic.php?t=13392&highlight=

Max

graphite wrote:Very nice and clear. That is something I have always wanted to do. are you out of the city much? if not, does the brightness of the night sky effect the detail of the shots?

With a target as bright as the moon, being far from the city isnt really important, but it is very important for deep sky photography- galaxies, nebula etc, and also for comets.

That said, yes I am quite a way from the city- 300km N of Sydney, but there is so much light pollution coming spewing into the sky above it, that I can see it from here! My main source of light pollution is Tamworth, 30km to my NNW. There are plenty of astrophotos on my web page that will give you an idea of how dark the sky is, but this one is probably the best to show that.



Gordon
http://members.ozemail.com.au/~loomberah/

the fisheye view of the sky looks great.

would be great to be able to see views like this from home.

Steve

I thought the moon shots were good, then I reached the last one, that looks great! ...

Thanks, I'm very happy with that all-sky photo, its been published many times worldwide too

Gordon

Excellent shots Gordon. Shows how much the moon has been pumbled over the centuries.
Jethro

Gordon, good stuff, which comet is that? I am getting up at 2 to drive out to the east to try and photograph C2006 A1 in the morning...

Big V wrote:Gordon, good stuff, which comet is that? I am getting up at 2 to drive out to the east to try and photograph C2006 A1 in the morning...

Yes I should get up and take an image or 2 of it before it gets too low as well.

Its C/Hyakutake in my all sky image from March 1996.

here it is a bit more enlarged



Gordon

jethro wrote:Excellent shots Gordon. Shows how much the moon has been pumbled over the centuries.
Jethro

Yep. Makes you think about just how much the Earth must have copped over the same time. Makes you glad of the atmosphere now, doesn't it?

If we didn't have it, we'd be dead for two reasons.
Suffocation and space impact!