- This topic has 2,639 replies, 51 voices, and was last updated 3 months, 1 week ago by
.
-
Posts
-
Joseph, which ZWO can are you thinking about getting?
I’m saving up for a a rig myself. It’ll be awhile before I take the plunge. Saving is going slower than expected.
Good night at Root River Park 6-29-2024. Excellent turnout of members and visitors and great member/visitor discussions were heard.
I used the Unihedron Sky Quality Meter to record sky darkness. An annotated plot of the data is attached. Max darkness 20.91 mag/arc-sec2.Attachments:
Great, now we have darkness values. I included your data plot into the article Root River Park 2024. Any suggestions for editing are welcome.
Can’t make the public outreach, but I am planning on hitting Root River to do some observing.
If anybody wants to join me, I’d be happy to have the company.
Duane
<p style=”text-align: left;”>I’d like to get set up before dark (9:00-ish), but I don’t always get out when I think I will. Regardless, it won’t be long after.</p>
Here is information regarding the Unihedron Sky Quality Meter readings and correlation to naked eye visual magnitudes. The information is found on page 15 of the instruction manual and this is the link: http://www.unihedron.com/projects/darksky/NELM2BCalc.html
The above link provides equations to convert magnitude per square second (MPSAS) to naked eye limiting magnitude (NELM) and visa versa. Simply enter the meter reading and click on the ‘calculate’ box. I’ll show this at our meeting Tuesday, 6/9.
Nice. Thanks.
For clarity:
NELM = Naked Eye Limiting Magnitude
MPSAS = Magnitude per square Arc-SecondI think I’ll make a chart using the info on that link and see if I can look at the sky and get the same result.
Given a clear sky tonight I plan to be at Root River Park to take dark sky readings with and without the Unihedron housing window in place. This is necessary to confirm the estimated 0.15 offset to the reading due to the housing glass window.
Excellent members event at Eagle Bluff last night and early this am.
A zenith dark sky recording is shown belowThanks for posting. Looking up it was pretty good. I could see all the stars in the Little Dipper and a lot more within that I normally can’t see. But that was looking most upward. Looking at the northern horizon was hazy (see pic).
Looking east and west, all but the brightest stars disappeared.
Great sky while looking upward, but the lower you looked the more difficult it was to see through the haze.
- You must be logged in to reply to this topic.