Jump to content

SkySurveyBanner.jpg.21855908fce40597655603b6c9af720d.jpg

Clear nights spoilt by thin cloud


Second Time Around

Recommended Posts

Here in East Kent so many forecast clear nights over the last couple of months have been spoilt by thin cloud.  It's been so much so that I've been losing typically 2-3 magnitudes.

It's been showing up on infrared satellite images, and sometimes looking through my night vision device shows otherwise invisible broken cloud rather like a thin mackerel sky.

Has anyone else found the same this autumn/winter?  If so, whereabouts are you?

  • Like 1
Link to comment
Share on other sites

Yes, quite a few times! Stick your head out for a quick look and think "ooh look, stars, that's promising". Then go out properly for a bit longer and think "maybe not then" when you realise only the brightest are poking through.

  • Like 1
Link to comment
Share on other sites

Here in northeastern Illinois, I think there have been two partly clear nights since December 3.  There have been a few more where the sky was covered with high cirrus making the moon for example look like it was swathed in cotton gauze.  My home naked eye limiting magnitude is about 3.5, maybe 4 if I'm lucky, but I couldn't even see Polaris through the high schmutz the other morning...

 

  • Sad 1
Link to comment
Share on other sites

I'm glad it's not me being precious about what makes a good clear night worth taking images on. 

So I've been using it to hone technique and practice setup of imaging.

Always worth a pint if it's clear. If only to find out where focus is 

 

 

  • Like 2
Link to comment
Share on other sites

I have had this experience regularly recently.  It looks clear to the eye but when I fire up the all sky camera on the observatory there is a clear pall of high cloud.  I then try to resit the temptation of imaging anyway, knowing I will regret it when I come to processing the integrations 🙄

Link to comment
Share on other sites

Well, that explains why Jupiter's moons are sloshing around in a swimming pool these past few nights. I've tried a couple of times with the 200P to image Jupiter, but cannot get anything other than a messy blob. I got much better results on the Sun today, than I've had on anything for more than a week.

 

This was the best I got tonight with the D3200 on the 200P.

Jupiter_Moons_20220117.JPG

Link to comment
Share on other sites

On 09/01/2023 at 18:15, Second Time Around said:

Here in East Kent so many forecast clear nights over the last couple of months have been spoilt by thin cloud.  It's been so much so that I've been losing typically 2-3 magnitudes.

It's been showing up on infrared satellite images, and sometimes looking through my night vision device shows otherwise invisible broken cloud rather like a thin mackerel sky.

Has anyone else found the same this autumn/winter?  If so, whereabouts are you?

Yes I have noted this a number of times over the last few months. Also, just as prevalent has been thin cloud (cirrus type clouds I think) drifting over around midnight spoiling an otherwise perfect evening.

Here in SW London (right on the outskirts) we have actually had a good number of clear evenings that ended up clouding over around midnight. The number of nights that it has been completely clear all night recently has been low.

Link to comment
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
  • Recently Browsing   0 members

    • No registered users viewing this page.
×
×
  • Create New...

Important Information

We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue. By using this site, you agree to our Terms of Use.