Search found 3005 matches

by Pete
Mon Sep 26, 2022 9:34 am
Forum: Galileo's Gabfest
Topic: Current evening objects suitable for newbies
Replies: 0
Views: 5

Current evening objects suitable for newbies

Tuesday night will hopefully be clear enough for my annual Backyard Astronomy class to observe from Barrington, and I'm putting together an observing list of objects that are easily viewed thru my 14" and that are examples of what we view. The class runs from 18:30 - 20:30, and it'll be dark en...
by Pete
Mon Sep 26, 2022 8:37 am
Forum: Astronomical Events
Topic: Jupiter at its Closest!!!!
Replies: 3
Views: 13

Re: Jupiter at its Closest!!!!

Jupiter's orbit: 5 AU
Earth's orbit: 1 AU

Current separation is 4 AU and Jupiter is a 50" in size. Not much larger than last year's pass but it sure beats Saturn at 18"
by Pete
Sun Sep 25, 2022 6:25 pm
Forum: The Imager's Studio
Topic: IC 1871 Soul Nebula
Replies: 2
Views: 9

Re: IC 1871 Soul Nebula

Big scope or not that's a great image Rog. Your stars are always so close to pinpoint and I'm jealous as hell.
by Pete
Sun Sep 25, 2022 2:33 pm
Forum: The Imager's Studio
Topic: Star size vice exposure and binning
Replies: 2
Views: 13

Re: Star size vice exposure and binning

Fascinating Roger. Thank you for running this study. To my eye the 2X is noticeably brighter and also a bit more bloated. Not sure that this correlates with theory for CMOS. When you bin 2X with a CCD camera your pixel is four times the size and this larger pixel captures 4X the photons of a single ...
by Pete
Fri Sep 23, 2022 10:37 am
Forum: The Imager's Studio
Topic: Floating Above Luna
Replies: 5
Views: 33

Re: Floating Above Luna

Steve Thanks, I may take you up on your offer someday. My plan is to start luanr/planetary imaging early next year. That will give me time to decide what equipment (especially camera) I want to procure and understand the process for using the equipment and image processing. I will probably buy a ZW...
by Pete
Thu Sep 22, 2022 8:44 am
Forum: The Imager's Studio
Topic: IC 5076 Reflection Nebula
Replies: 6
Views: 33

Re: IC 5076 Reflection Nebula

Actually I didn't realize that exposure time was so important to color :o
by Pete
Mon Sep 19, 2022 10:59 am
Forum: The Imager's Studio
Topic: IC 5076 Reflection Nebula
Replies: 6
Views: 33

Re: IC 5076 Reflection Nebula

Wow! That's almost at the level of the Hubble Deep Field. Sure wish I could catch color like that.
by Pete
Fri Sep 16, 2022 9:23 pm
Forum: Astronomical Events
Topic: -3.9 magnitude ISS pass tonight (Fri Sep 16)
Replies: 2
Views: 17

Re: -3.9 magnitude ISS pass tonight (Fri Sep 16)

It always amazes me how these passes are timed to the second.
220916 ISS viewing.JPG
220916 ISS viewing.JPG (529.73 KiB) Viewed 15 times
About a dozen neighbors dropped by to Ooh and Aww.
by Pete
Fri Sep 16, 2022 6:40 pm
Forum: Astronomical Events
Topic: -3.9 magnitude ISS pass tonight (Fri Sep 16)
Replies: 2
Views: 17

-3.9 magnitude ISS pass tonight (Fri Sep 16)

The ISS pass starts at 7:59 PM (Friday Sep 16) as it rises in the south west. It’ll pass nearly overhead at 8:02 and it’ll end in the East North East at 8:05 PM.
by Pete
Fri Sep 16, 2022 3:28 pm
Forum: The Imager's Studio
Topic: NGC 6826 Blinking Planetary Nebula
Replies: 1
Views: 20

Re: NGC 6826 Blinking Planetary Nebula

I'd never even attempt something only 25 arc-seconds in size. Seeing is normally 3 or 4 arc-seconds.