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Messages - John Pierce

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NGC/IC Project / Re: NGC/IC Project
« on: Today at 04:13:15 PM »

I got these from Arkash aka kstars, but he only had the NGC not the IC files.

NGC/IC Project / NGC/IC Project
« on: Today at 02:48:22 PM »
The long running website almost was lost forever when the original website owner passed away.  We are in the process of pulling together the pieces and recreating it.

This forum section is for discussions related to the process of resurrecting and restoring this valuable astronomy resource, and ongoing maintenance once its back in place.

Equipment Discussions / new toys
« on: April 19, 2017, 11:50:40 AM »

(new ones being the 18 and 24)

now I guess we get bad weather inspite of the forecast?

Equipment Discussions / Re: acquired a celestron ci700 (losmandy g11)
« on: April 17, 2017, 10:54:23 AM »
So this tripod doesn't have any sort of way to level it short of shims under the legs.   Asked my friend for advise, and he came up with this, courtesy of his 3D printer...

now if itw ill just stop raining :-p

TAC Imaging / A question for you DSLR imagers...
« on: April 07, 2017, 05:28:22 PM »
About to dive back into DSLR astrophotography, initially using my 80 f/11 on a losmandy made CI-700 (yeah, overkill!)...    will be using my Windows laptop to handle autoguiding via phd2, yada yada.    Wondering whats the SW of choice for Canon DSLR management, is it still BackyardEOS ?

Annual Star Parties / Re: Lake San Antonio reopens!
« on: March 30, 2017, 03:04:08 PM »
gotta say, those *were* some of the funkiest and most beat up portapotties I've ever seen.

Annual Star Parties / Re: Lake San Antonio reopens!
« on: March 30, 2017, 02:12:45 PM »
k... I was just curious.

Annual Star Parties / Lake San Antonio reopens!
« on: March 29, 2017, 09:14:12 PM »
heard on the teevee news (KSBW) last night that LSA has reopened, weekends for now, and 7 days/week in may.

does this mean CalStar might move back to LSA, or is it likely to stay at Whisper Canyon?

fyi, I sold this scope a few months back back to a fellow SCAC member to use as a grab-n-go SCT.

Equipment Discussions / Re: acquired a celestron ci700 (losmandy g11)
« 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)

Equipment Discussions / acquired a celestron ci700 (losmandy g11)
« on: March 23, 2017, 02:04:02 PM »
so I just acquired a rather nice CI700 equatorial mount, this was a celestron branded 'cheapened' version of the Losmandy G11...   its a beast.  has alt and dec slo-mo motors but no goto.

I initially was thinking of using it for unguided piggyback as I don't really have a suitable scope for it, but now I'm wondering if I couldn't rebuild my Coulter 10" F/4.5 ... use one of Mark's Astrogoods alloy tubes, a better focuser than I now have, shorten up the tube enough that I can achieve focus with my DSLR (the secondary on the coulter is huge).  I have already replaced the coulter's primary mirror cell with one of Mark's creations, and the secondary spider with a curved vane spider from 1800destiny.

am I nuts for thinking this is a good idea?   the mount is rated for 60 lbs of instruments, 100 lbs total.   Celestron sold it with  C11 and C14 telescopes on it :-O

I posted this last year, I'll post it again,

stumbled onto this amusing Australian tv series, apparently it ran across Australia earlier this year.

the whole thing is on youtube,

Under the Milky Way is a 6 part (28 min each) Australian TV comedy/drama about an astronomical observatory in Coonabarabran NSW, thats being shut down because a fancy new larger observatory has opened nearby.     The whole thing was filmed on location at Siding Springs and Coonabarabran.

TAC Visual / Re: Solar Binocs!
« on: March 02, 2017, 09:53:30 AM »
oh yeah, I know all the precautions.     the felt tape I'm going to use should make them very snug.   plus  the business end is up in the air, so harder to reach...

TAC Visual / Solar Binocs!
« on: March 01, 2017, 08:13:04 PM »

those are 100mm binoculars, with the 14mm eyepieces, they are 42X

thats V0.1 ...   the yellow frames were 3D printed and not quite dimensionally accurate, so I need to do some tweaking.  I have some felt strips I'm going to add to the top and bottom so they fit more securely.    The ThousandOaks solar film wrinkled a bit when I taped it down, so I need to lift the tape, and trim the edges just a bit, then tape it down again.   Finally, I want to cover in black gaffers tape to reduce glare from the yellow plastic.    I might move the solar film to the front when I trim it.

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