I am still trying to come to focus. Since the granulations should be most apparent, which way do you turn the tuning ring to see the granulations? I have been looking for sunspots and cannot see them either. I have a white light telescope set up next to my PST and can see sunspots with it. Thanks.
Jim
Still trying to come to focus?
Re: Still trying to come to focus?
Granulation? With an Ha scope? You can't see it. It's in the photosphere, a WL subject.
- robert
- Way More Fun to Share It!!
- Posts: 3070
- Joined: Fri Oct 14, 2011 1:49 pm
- Location: N.W.Scotland
- Has thanked: 4 times
- Been thanked: 1275 times
- Contact:
Re: Still trying to come to focus?
Try another eyepiece, low magnification 12mm or more. Get the limb sharp, then see the spots, then tune the ring to get best contrast remembering that the image is all red so needs getting used to.
No granulation though in Ha as John says
Have fun
Robert
No granulation though in Ha as John says
Have fun
Robert
images and animations http://tinyurl.com/h5bgoso
2024 images https://www.flickr.com/photos/69734017@ ... 0313830045
2023 images https://www.flickr.com/photos/69734017@ ... 0304905278
ED80. ED100. Celestron-150mm-PST mod. C8 edge. ES127
LS60PT-LS60F-B1200. B600-Cak. PGR-Ch3-IMX265
2024 images https://www.flickr.com/photos/69734017@ ... 0313830045
2023 images https://www.flickr.com/photos/69734017@ ... 0304905278
ED80. ED100. Celestron-150mm-PST mod. C8 edge. ES127
LS60PT-LS60F-B1200. B600-Cak. PGR-Ch3-IMX265
Re: Still trying to come to focus?
Besides sunspots, what should I see? I got fairly good focus using just the PST. I saw sunspots but they were not as clear as using white light. I also saw some sharp darker areas all across the disk. When I double stacked the HA, I got uneven coverage. It seems that when ever I moved the tuning rings, it got brighter in one area and darker in another area. How do you get even illumination?
- marktownley
- Librarian
- Posts: 42614
- Joined: Tue Oct 18, 2011 5:27 pm
- Location: Brierley Hills, UK
- Has thanked: 20908 times
- Been thanked: 10568 times
- Contact:
Re: Still trying to come to focus?
What is the limb?
Jim
The limb is the edge of the sun. Look in the main section of the forum for examples of what the sun looks like in Ha.
Jim
The limb is the edge of the sun. Look in the main section of the forum for examples of what the sun looks like in Ha.
http://brierleyhillsolar.blogspot.co.uk/
Solar images, a collection of all the most up to date live solar data on the web, imaging & processing tutorials - please take a look!
Re: Still trying to come to focus?
"Granulation" in Ha is a misnomer, it aught to be termed "texture" as the similar appearance has a different origin. Ha operates at a higher altitude than the white light view such that sunspots are not so easily seen.