More Lunar Images

[Zac Pujic]

Here are some more lunar images from the last few nights.

Dorsa Andrusov and a small lunar dome
http://astroimg.org/LunarPics/DorsaAndrusov.jpg

The bizarre crater Gaudibert.
http://astroimg.org/LunarPics/Gaudibert_Pujic.jpg

Hills (and three lunar domes) near Vendelinus.
http://astroimg.org/LunarPics/Near%20Vendelinus.jpg

31 cm Newtonian. SkyNyx 2.1M. Wratten 25A filter.
Frames stacked using MAP function on Registax 4beta.

Zac Pujic
Brisbane, Australia
http://astroimg.org

[iceman]

Nice set of images, Zac. The new camera is definitely working out well for you.

Looking forward to more over the next week as the moon sits nice and high in the early morning sky.

[[1ponders]]

Nice workout for the new camera Zac. It is showing a lot of promise.

[Robert_T]

Great shots :thumbsup: Thanks for sharing Zac... you're just using the red filter, no IR/block or anything like that?

[ving]

man i cant wait for registax 4!!!!

super images zac!!! :thumbsup:

[iceman]

Well done on getting LPOD today with your image of Gaudibert, Zac!

Congrats on another great achievement.

[Zac Pujic]

Thanks everyone

Robert, I only use a red filter to remove blue light which is scattered more and so degrades seeing. An infrared pass filter would also provide clear views, however I don't have one yet (its on order). An IR block would be a poor filter since this would pass only visible light which is more affected by scattering that IR light. The resulting image would not be as good as with a red or IR-pass filter.

If the seeing is superb, a blue filter is better. This is because resolution is inversely proportional to wavelength. The shorter the wavelength, the finer the detail that can be seen. However this only works when the seeing is really really good since blue light is highly scattered. Its a close tradeoff.

Bottom line is, if you have an IR block filter, don't use it with a red filter for the Moon (for b/w imaging). An IR-pass only is a good choice too, but then the red is unnecessary.

As usual, my emails are clear as mud.

zac

[Zac Pujic]

Mike

thanks. I got sick of imaging the same old craters and looked for something different. I'll take one more shot of the messier twins and then won't look at them again.

zac