The Moon is about two and a half days past New Moon and it was looking good in tonight’s golden Sydney sunset.
Whilst the four months of mostly cloud and rain has been forecast to continue into our southern winter, we have enjoyed some surprisingly pleasant sunshine over the past few days and I’ve managed three nights outside with telescope. I had to brush the spiders off!
However, the news is not good, unfortunately. For three nights I’ve been taking images of a galaxy called the Sombrero and also a bright supernova. Every single image has been wrecked by horizontal streaks right across the image.
They look a bit like inverted Starlink pollution.
I’ve spent countless hours trying to work out whether it’s the telescope optics, the camera hardware, the live stacking software or even the guiding software. Until I figure that out, I guess there will be no more images.
Here’s a clickable four minute exposure, showing the Sombrero Galaxy, with horizontal interference streaks:
The black streaks always coincide with bright stars. If I over-expose the image, even more lines become apparent.
My images of the supernova in NGC 4647 are even worse….
What causes dark interference lines and how can I get rid of them? Help! Any ideas welcome!
EDIT. 6th May 2022. The Solution:
|Telescope:||Meade LX-90 Schmidt-cassegrain on Skywatcher EQ6-R mount.|
|Camera:||ZWO ASI 071 MC|
|Software:||ASCOM, EQMOD, SharpCap, PHD and Cartes du Ciel.|
Cosmic Focus Observatory
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Images © Roger Powell
ABOVE US ONLY SKY : amateur astronomy in australia