Recent Posts

Pages: 1 ... 8 9 [10]
Observing Reports / Re: Eclipse from the Crooked River National Grasslands, Oregon
« Last post by John Pierce on September 09, 2017, 08:47:13 PM »
that was prearranged, deal was my wife Ruth got the first minute at the big binos, I got the 2nd minute so I could be there to replace the solar filter as totallity ended.  worked out great.

with the 14mm 82deg wide ES eyepieces, those binos are 42x with a 2 degree FOV.  and the 100mm f/6 binos are ED/APO, and give really good sharp fields edge to edge, without any noticable chromatic abberation.   the corona and prominences were stunning, as was the re-appearance of the eedge of the chromosphere just as totality ends.   when the 'diamond ring' first started to flare up, I scrambled for the filter and popped it back on, and boom.

fastest 2 minutes of my life :-o

oh, for those interested, here's said video of me making a fool of myself with my half minute too fast eclipse timer :-/
Observing Reports / Re: Eclipse from the Crooked River National Grasslands, Oregon
« Last post by DDK on September 09, 2017, 06:47:01 PM »
John, I saw your video of your group during totality. Did look pretty relaxed, with no jostling, except for you asking for a turn at your refractor right mid-totality.
Observing Reports / Re: Eclipse from the Crooked River National Grasslands, Oregon
« Last post by John Pierce on September 09, 2017, 11:20:22 AM »
there may have been 20K people at the SolarFest, but where we were at the RV park in the corner of the fairgrounds, there was at most a few 100 people scattered about a large lawn, it wasn't bad at all.   a whole bunch of them closest to me were fellow SCAC members, so even better.    Some wag in the back corner of the lawn broke out a trumpet and played the opening lines of "Thus Spake Zarathustra" just as totality was beginning, thankfully he was a skillful trumpet player.

We arrived there Thursday, well before any traffic, and left Tuesday... the worst traffic was going into Portland to drop someone off at the train station, AFAIK, this was typical Tuesday mid day traffic.
Annual Star Parties / Re: CalStar is 6 weeks away!
« Last post by John Pierce on September 09, 2017, 11:12:41 AM »
I did a little reading about RV charging of Telsas.  you can program the tesla on its charge screen as to how many amps it will draw.    Do note, that RV "50A" circuits, using a NEMA 14-50 plug, are 2 legs of 120 == 240V total, and often ARENT actually 50A, more like 30 + 30 A... so you can safely pull 30A of 240V off them.    the 30A circuits, using an RV trailer specific "TT-30" plug, are 30A at 120V single phase.    The one picture I saw on the old whisper canyon site via the wayback machine showed what looked like a standard RV 'pedestal', this generally provides 3 outlets, a '50A', a 30A, and a standard dual 15A, each typically on its own breaker.   I would NOT expect to be able to pull full power from both the 50A and 30A simulataneously, so if the 50A is plugged into a big RV, and you're using the 30A to charge a tesla, make sure the RV is NOT running its air conditioner.    if the Telsa will show the voltage input on its screen, then I'd ramp up the current til the voltage starts to drop, then back it down a few ticks.

RV park wiring is frequently very funky and should be treated with suspicion.   For my little camp trailer, I'm getting a 30A surge protector/monitor that will warn me if the outlet is mis wired, show me the actual voltage, AND the actual current usage.
Annual Star Parties / Re: CalStar is 6 weeks away!
« Last post by CharlieWicks on September 08, 2017, 04:53:08 PM »
I'm sure that it would be okay to charge at the pole barn, assuming that you're not overloading that circuit. (I have no idea what that circuit handles). The RV sites have electrical, but I don't know if they're 30 or 50 amp. I also don't know if there are any RV spots left. I'll have to check with Richard Ozer if there are any available.

Annual Star Parties / Re: CalStar is 6 weeks away!
« Last post by vkathuria on September 07, 2017, 10:55:20 PM »
I will be driving in an electric vehicle. Would it be ok for me to use the pole barn for charging it? (I can use a regular outlet for charging)

Also, do RV sites have electrical hook ups? If so, do they have a 50A or a 30A plug?

TAC Visual / Possible CA Aurora
« Last post by mpacker on September 07, 2017, 07:08:49 PM »
Space Weather Message Code: ALTK08
Serial Number: 23
Issue Time: 2017 Sep 07 2350 UTC
With K-index of 8 report from NOAA there it may be possible to see the Aurora Borealis here - trick is dark sight like San Luis Reservoir, Lake Berryessa...

ALERT: Geomagnetic K-index of 8
Threshold Reached: 2017 Sep 07 2350 UTC
Synoptic Period: 2100-2400 UTC
Active Warning: Yes
NOAA Scale: G4 - Severe
Observing Intents / Re: Eclipse 2017: Planets in a row for eclipse
« Last post by zlanguy on September 05, 2017, 12:11:30 PM »

Nice tip.. but unfortunately.. I was so mesmerized, I mean just dumbstruck by what I was seeing through my cameras super zoom lens that I forgot everything else including whether my camera settings were correct for the occasion.  Luckily, some of the pictures did come out pretty good anyway. But I'm telling ya, I've seen pictures and youtubes, but seeing it through my own lens turned my mind to mush and I would have forgotten to look for Mercury or Venus anyway.

But thanks for putting that up there.  I hope it helped someone.
TAC Astro Classifieds / Free 10x10 quikshade frame
« Last post by Jeffcrilly on September 04, 2017, 06:23:42 PM »
(Not totally astro related, but for the next GSSP or calstar someone here might find this useful....)

I have a 10x10 QuikShade canopy here that i havent used in years.
The frame seems to be in good shape; the cover is not.

As for replacement covers -- i have not been able to find anything on the web, but i did see a note on the quikshade website that if you can call them for replacement covers.
I'm pretty sure this came from OSH back in (?) the late 90s.
This is a "slant leg" version.   It is steel and a tad bit heavy.  Comes with a carry bag.

The cover took some wind damage at a GSSP around ? 2007, it got some major holes.
I've been using the cover as a scope cover for like 10 years, so its seen better days.
If you really really want the cover also, i suppose i could part with it.

This is pick up only in palo alto.
Send me a message here and i'll check it.   If no takers i'll put it up on nextdoor, then maybe the freebie craigslist.

TAC Visual / Re: Big New Sunspot gif
« Last post by buynoski on September 03, 2017, 06:50:32 AM »
If you look at the SOHO magnetogram, one of the large spots in that group has a "backward" magnetic alignment.  That
increases the likelihood of a violent event (flare, e.g.) from it.  We may have some late-solar-cycle fireworks coming up.
Pages: 1 ... 8 9 [10]