Rick, I don't really believe in limiting magnitudes as they are as much
dependend on one's eyesight as on the quality of the sky. That said I can
see mag 4.2-4.3 stars with averted vision in good nights and with direkt
vision in very good nights. I never can see even the slightest hint of the
milky way though, not even in the best nights.

Stefan

"Rick Johnson" schrieb im Newsbeitrag
...
Not being in the middle of Berlin has some advantages in astro
photography! I can't even fathom how you do so well from there. What is
your limiting magnitude at the zenith?

Rick

Stefan Lilge wrote:

Rick,

actually the reason why the new version looks sharper is simply that I
did some sharpening in software while the old version was essentially a
raw picture.
I just re-viewed your image of this galaxy and it shows a lot more
detail.

Stefan

"Rick Johnson" schrieb im Newsbeitrag
...



Stefan Lilge wrote:

I imaged NGC 3310 on January 25 but didn't get enough frames because of
clouds, so I added some more exposures on March 11. NGC 3310 is one of
those objects that are hard to display because the core is so much
brighter than the halo.

Taken from the middle of Berlin with an 8" SCT at f/7, G11 mount,
SXV-H9 camera, 42x5 minutes.

The picture can also be found at www.slilge.de/temp/3310-42x5gut.jpg

Stefan

------------------------------------------------------------------------


Looks a lot sharper than the previous version. Seeing was better too it
appears. Now that I have the problem with my frost gradients cured
(heaters installed anyway), I should retake it but there are so many
other things I've not taken and so few nights (raining for the next
week) this time of year I'll have to move on for now.

Rick