Getting the best focus of the Sun with the PST is very important for seeing the fine surface details. However the PST focus knob is somewhat small and it can be a little challenging to obtain a good focus..
You can make this easier by getting a CMC large focus knob for the PST from Agena AstroProducts. Unfortunately, when I checked they were on backorder, so I am on their waiting list.
You can make this easier by getting a CMC large focus knob for the PST from Agena AstroProducts. Unfortunately, when I checked they were on backorder, so I am on their waiting list.
Then I received a suggestion from Brian Straight (that he learned from Mike Weasner’s ETX site). You can clip a spring-loaded clothes pin at a right angle to the focus knob on the PST to give you better fine control of the focus.
You first use the PST knob for coarse focus, then clip on the clothes pin to make very fine adjustments to the focus by moving the end of the clothes pin in small increments.
Sometimes simple really works well!
Sometimes simple really works well!
RSS Feed