M67 Mag Chart , ToBuy
Cabrillo College Observatory ClearSkyClock
5-day forecast
As of Apr 25, 2025. Check out past events here.
NEA Occultations alerts at RASC , How to Report a CBET , and 50 most recent CBETs , RECONN Trojan Events Upcoming
Asteroid Occ Predictions: Steve Preston's , Derek Breit's , Calif Path Maps , SF Extra Event , IOTA Observations , Report Template , Reporting ACROSS events
LuckyStar Portal , Journal of Occultation Astronomy Issues , GAIA Astrometric Astroid Binaries List , UCAC4 details
Software: Using AVIsynth , TANGRA , Making Aladin Finder Charts , Visual Limiting Mag , Registax and Occ Video ,
PyOTE 8min tutorial , PyOTE HowTo , PyMovie Tutorials , FFmpeg edit/convert video , PyMovie: Vimeo HowTo , My PyMovie/PyOTE Instruc
Making C2A Charts , YouTube IOTA Videos , Journal of Double Star Observations
Brad Timerson's LiMovie vid , My "Using LiMovie" , Reported Asteroid Occulations , OWc predictions
ACROSS Predictions with maps , RECON Predictions through 2029
Equipment: Watec 910HX , specs , my Tests , Docs , Response curve , Video astrometry , PC165DNR , Video recording Occultations ,
My "Using 8SE/Video/VTI 2nd Unit" (pdf) , HristoPavlov.net , f/3.3 vs 0.5x Orientation 8SE
MISC: Star cross ref , South Bay Grazes , SF Grazes , Lunar Phases , Driving Distance Calculator , Remote Control of PC165DNR ,
Atmospheric Extinction vs. Altitude=.4/sin(a) mags , magnitude vs. luminosity calculator
Free
WiFi hotspots in California , Comet /DSO Photo Op's
M67 Mag Chart , ToBuy
Cabrillo College Observatory ClearSkyClock 5-day forecast
May 2 - Fri morn 12:11am - Occultation of a 13.9 Star by 2000 KZ25, from south Santa Cruz. I'm on north limit. 0.3s. Tough. Alt= 49, Az=148 in Serpens. If weather's good, maybe just stay after the Wilder Ranch event 2 hrs earlier.
May 2 - deadline for $160 reg for SC Tri. See email 4/27.
May 3 - Occultation of a 11.6 by Srnad, Alt=28, Az=166 in Libra from SC Mtns. Bernard, Karl, BD all inside path. Planning page. Centerline on BD airfield, St. Clares Retreat. Karl decently side path, but RUWE=3.95; high, and so we might all get a miss too.
May 4 - Sun morn 4am - Occultation of a 14.0 Star by 1998 PV. On centerline, 1.4s duration. Alt=37 Az=173, doable from here. Planning page
May 4 - Sun eve 8:42pm - Occultation of a 10.7 Star by asteroid Jose, from home and anywhere in BD to escape fog.
May 6 - Sun crosses Saturn's ring plane and rings become very dim and irregular and quite thin. In morning sky.
May 17 - TrailQuake Half marathon
May 24 Sat - Give talk on Asteroid Astronomy for MIRA in Monterey. Dinner 5:30pm
May 31 - Wildcat Half Marathon
Jun 10 10:46pm - Wide path occultation of Euphrosyne. Includes MIRA near centerline, we're well inside, so is Ted Swift. Planning page. Dur=30s. Full moon night.
Jun 17 Tue eve 10:55pm - Occultation of a 8.4 mag star by Madeline - from Santa Cruz and SC Mtns. All of "team santa cruz" inside the path of this bright event. Planning page
Jun 20 Fri eve 11:21pm - Occultation of a 11.6 star by Shimizu, from Santa Cruz and SC Mtns. Wide path includes Karl. Planning page
Jun 26 Thur 1:59am - Occultation of a 13.5 Star by Bangsgaard, from northern Santa Cruz and mtns. Planning page
Jun 29 6pm Mars misses 24+ moon in late afternoon by just a few arcmin. Graze path steep misses off the coast, would have to go to Baja. Photo op only.
July 7 - 3:30am - Occultation of a 12.4 Star by RECON asteroid Achates from LA to Las Vegas. Pretty hot in the desert, path not certain enough to make it worth the drive at the moment.It's also in the new FY 25/26 and may not be possible to reserve a van.
Aug 9 - Bear Creek Half Marathon
Aug 16 - June Lake Triathlon
Aug 23 - Double DipSea Race
Sept 7? - GraniteMan Challenge
Oct 4 - Auburn Half Marathon
Oct 16-18 - Death Valley Dark Sky Astro confab. Maybe a good van trip for Astro 9?
Oct 18 - Mt Diablo Summit Stomp
November Late- mid December: Saturn's rings are less than 0.5 degree inclined, but still bright because now sunlit again.
Sep 5 - internet hosting plan expires and you must renew with the options you now desire before this date, else auto-charged.