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#1
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Focal Reducer for the Sun?
Hi,
I'm using an 8" F/10 SCT (Meade LX90). Normally the disk of the sun fits just fine in my FOV, however I am now using a a CCD camera that, because of the chip size, blows the image scale way up. Can I use a focal reducer on bring it back down somewhat? I have use the reducer on deep sky objects, but I just wonder if there are any special concerns when using it on the sun. BTW, I am using a Thousand Oaks Type +2 glass white light solar filter. Thanks. |
#2
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Focal Reducer for the Sun?
You should be fine. The filter is prior to the optics and serves also as an
ERF (energy rejection filter). Just make sure the filter remains firmly in place during the session, and keep the finder scope capped to stave off a major uh-oh! Cheers, Paul http://www.astro-nut.com/sun.html --- http://www.astro-nut.com --- "RS" wrote in message news Hi, I'm using an 8" F/10 SCT (Meade LX90). Normally the disk of the sun fits just fine in my FOV, however I am now using a a CCD camera that, because of the chip size, blows the image scale way up. Can I use a focal reducer on bring it back down somewhat? I have use the reducer on deep sky objects, but I just wonder if there are any special concerns when using it on the sun. BTW, I am using a Thousand Oaks Type +2 glass white light solar filter. Thanks. |
#3
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Focal Reducer for the Sun?
Should work just fine.
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