Hey, it's red hot? No, it's just red light. Normally, we cannot use a Herschel Wedge with a SCT, but since I've placed an ERF in the front, I can, but the light will become red in color, so it makes a false impression of being red hot! :-)
Welcome to my astronomy blog, I dedicate myself to the simplest form of amateur astronomy which requires only portable equipment. I have two small refractors, two small binoculars, one small GOTO mount and another small equatorial mount, and a small H-alpha solar filter. Originally from a city where the people were proud of their light pollution, that is Hong Kong where I loved. Relocated to the UK since 2021.
Sunday, January 06, 2008
Red hot Herschel Wedge!
I've installed a small heat sink on my Herschel Wedge to cover the bright sun light and to let it cool down, let's see the following:

Hey, it's red hot? No, it's just red light. Normally, we cannot use a Herschel Wedge with a SCT, but since I've placed an ERF in the front, I can, but the light will become red in color, so it makes a false impression of being red hot! :-)
Hey, it's red hot? No, it's just red light. Normally, we cannot use a Herschel Wedge with a SCT, but since I've placed an ERF in the front, I can, but the light will become red in color, so it makes a false impression of being red hot! :-)
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