« Last post by pnatscher onYesterday at 10:51:03 AM »
Going to Fremont Peak after all since the latest forecast shows the RH% considerably lower. I'll be at the FPOA observatory offering a great S. horizon view into Puppis. I want to observe and sketch three planetaries in Puppis before that constellation is no longer visible by April new Moon.
« Last post by satterwill onYesterday at 10:37:21 AM »
I was thinking about doing something relatively short Tuesday night. Depending on others' intents I might be interested in joining or I may go solo elsewhere so as not to disrupt things with an early departure.
« Last post by pnatscher onYesterday at 07:45:40 AM »
The weather forecast looks good for Tuesday night at our observing sites. It’s New Moon on Tuesday! The Moon sets too late for Friday and the weekend observing. Anyone interested in getting out to observe Tuesday night?
« Last post by John Pierce on March 23, 2017, 04:55:39 PM »
hmmm, said coulter has a 65mm (minor axis) secondary, so rough calculations suggest that with a 12" OD tube, plus focuser minimum height plus the 44mm flange distance of a EOS DSLR, I'd only get a 16mm diameter image circle before the image starts to darken significantly. not good enough for an APS-C DSLR!! (which has a 28mm or so image circle)