Mars 23rd December

[astroman001]

Seeing was poor and it was bitterly cold, frost on scope! Here is my first images of Mars this year.

regards

Peter

PS anyone know what happened to UKAI?

[PH-R]

Great images, thxs for sharing.

How small in comparison would images be taken through a 100ED?

Also could you please tell me what CM means and why do the images appear larger as this number increases?

Best wishes,

[astroman001]

Hi PH-R,

CM stands for central meridian, it is the longitude at the centre of Mars disk. The reason the images are different sizes is the focal ratio at time of imaging. The first image was at f/20 and the next two at f/30, in effect a higher magnification.

regards

Peter

[astroman001]

PH-R,

sorry forgot to answer your 100ED question. I am assuming you have a 900mm focal length at f/9. With my C11 at f/30 the focal length is 8400mm. This is aprox 9x larger magnification than the 100ED.

regards

Peter

[Clayton]

Nice work Peter. Lots of detail visible

[johnh]

Although soft there is much detail on the disc and glow is quite attractive, looks like you got the interesting side too.

I think UKAIF may be off over Christmas by the looks of things, it seems to be a site issue?

JohnH.

[neil phillips]

Excellent result Peter some nice detail on show, excellent processing too.

[astroman001]

Thanks for the comments.

[prokyon]

Hi Peter,

great result!

Which filter set (Astronomik?) and which filter wheel do you use?

regards

werner

[astroman001]

Astronomic type II and manual Atik wheel