Cabrillo College Observatory ClearSkyClock
5-day forecastAs of Oct 4, 2026. Check out past events here. MyFlexActivities
Publishing: Overleaf to Write Papers , How to Report a CBET , and 50 most recent CBETs , HowTo Paper for JOA
Asteroid Occ Predictions: Steve Preston's , Derek Breit's , Calif Path Maps , GAIAMoons Predictions , IOTA Observations , Report Template ,
Reporting Observations: IOTA Hub , Reporting ACROSS events
ACROSS Predictions with maps , RECON Predictions through 2029 , RECONN Trojan Events Upcoming ,
LineA Occultation Prediction Database (very comprehensive) , Naming Minor Planet Discoveries , NEA Occultations alerts at RASC
LuckyStar Portal , Journal of Occultation Astronomy Issues , GAIA Astrometric Asteroid Binaries List , RASC high value '25 Occs
Software: 2026-InstallPyMovie/PyOTE Using AVIsynth , TANGRA , Making Aladin Finder Charts , Visual Limiting Mag , Registax and Occ Video , UCAC4 details
Install PyOTE/Pymovie/PyOTE , 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
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 , Occ8SE-Instructions
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
M67 Mag Chart , Taking Dark, Flat video
Cabrillo College Observatory ClearSkyClock 5-day forecast
Oct 6 - Tue 10am - w/ Zeke Hausfather and Sandy and all, on Zoom UCR Pre-Briefing for "University Challenge" in late October. See 9/21 SF email for link.
Oct 6 - 8:53pm - Occultation of a 12.5 Star by 12.9 (57) Mnemosyne, for maybe 2 or 3s from Santa Cruz and north, including Cabrillo Observatory where I will be conducting Astro 8A. Planning page.
Oct 6 - 10:55pm - Occultation of a W=13.8 Star by 1999 AU, from St. Clares, and upper Scotts Valley, Zyante, and Karl's. Not Cabrillo. Planning page
Oct 8 Thur 6-9pm - Astro 25 Pre-trip meeting
Sat Oct 10 - Banff Film Festival at the Rio $27
Oct 12 - Mon morn 1am , RECONN Occultation by Trojan Asteroid (4754) Pantoos, of 11.1 star for 10s. From Santa Rosa area. Red limit line crosses Santa Cruz. Poor rank. Map not given on RECONN site. Look it up on OWc when in range.
Oct 13 - Tue eve 9:01:38pm - Occultation of a 12.3 Star for 0.3s by (1980) Tezcatlipoca, for Zyante, Glenwood, and Karl's on the northern limit. I'll try from Cabrillo Observatory.
Oct 16 Fri eve 7:34pm - Occultation of a 13.5 Star by Hermione for 5.8s. Good for Karl, Ay 25 class is on the northern limit. Will have to arrive early to get set up for this. Planning page
Oct 16-18 Fri-Sun: Astro 25 field class at Stanislaus River
Oct 18 - 10hr UT - RECONN Occultation of 16.2 Star by () Asteropaios from CA. Sunday morn; I'll be in the Sierra. Might it be visible??
Oct 21 - Wed 3:15pm at Rm 1520 Cabrillo (Hort?) for flu and CoVid vax.
Oct 23-27 Fri-Tue: EFI "University Challenge" Conference at UCSC
Oct 25 Sun morn - 11hr UT - RECON Occultation of 14.9 Star by Mentor for 10s. G=16.4, Mentor=14.2 - very difficult even for MIRA
Oct 25 Sun eve 11:52:20pm - GaiaMoons asteroid Kubetzko in Carrizo Plain.
Nov 1 Sun eve 11pm - Occultation of a synchronous binary asteroid (1338) Duponta from Calaveras Reservoir. A worthy trip with the van, perhaps. No campgrounds on the path that I can find. No occultations of this photometric binary have yet recorded the moon. Planning page.
Nov 6 - last day to propose for Flex Week presentation (e.g. "Climate knowledge your students need to know - but don't")
Nov 9 - 13UT - RECON Occultation of 14.2 Star by (5648) by 15.0 () Axius, for 5.3s, from Central CA
Nov 24 - deadline to submit paperwork for Twitter acquisition. Gemini is very helpful in getting this done efficiently.
Dec 1 - Dr. Palachek 6:30am
Dec 8 - RECON occultation of a TNO, from the Mt Lassen Area. As of Aug '26, this is the next RECON event on their list that is in CA.