Last update March 24, 2017

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The BOEC was declared Canada's 15th Dark Sky Preserve in Nov, 2012. At the ES Fox Observatory, we have a large reflecting telescope (a 28-inch Webster) and a 10-inch SCT on a GOTO mount that we use regularly in our public viewing sessions.

Click for maps to: ES Fox Observatory or Tom Thomson Art Gallery meeting locations.

MESSIER MARATHON at Fox cancelled for Mar 25. We try again Apr 22.

Crescent Moon and Mercury in West to March 30. Click here: SKY SIGHTS

Next public observing night at Fox Observatory is Dark of the Moon viewing April 22 but viewing may occur on an impromptu basis, weather permitting at other times. See BAS Calendar of Events below for contact info if you would like to join us. The public is welcome!

Next BAS club meeting is April 5, 2017 (7 pm) at Tom Thomson Art Gallery.

For a review of the Mar 1, 2017 meeting, see
Meeting Recap

ASTRONOMY EVENTS FOR 2017 -the complete list- is available here: ASTRONOMY 2017
MARCH 2017 StarGazerNews now available. Click here: NEWSLETTER

MORE than one binocular COMET for February and March and more coming.
VIS. COMETS for more.

March-April 2017 (the short list)

BAS regular meetings are the 1st Wed of the month at 7 pm at the Tom Thomson Art Gallery in Owen Sound (there are no regular meetings in January and February). Check the calendar here: BAS 2017 Events Summary for meeting dates and other events like public viewing nights at the Fox Observatory.

If you would like to be included in our list for impromptu observing nights contact Brett T. or John H. Some of the more interesting sky viewing opportunities are also described graphically in SKY SIGHTS.

NOTE: ALL observing events require clear skies. If it is overcast or raining, observing will NOT be possible. If you arrive at the venue and it is overcast or raining, there may not be any BAS members there. See COMING EVENTS for more details and instructions including a contact phone number if you are unsure about whether to attend due to weather. When visiting the Fox Observatory, please park at the main lot by the Learning Centre. Parking near the Fox is reserved for disability access and equipment drop-off.

NOTE: BAS Meetings and public viewings are open to the public at no charge. BAS viewing at ES Fox Observatory is also generally open to the public (see monthly listing below and our BAS 2017 Events Summary). We welcome out-of-town guests on all of our listed observing nights. Individuals or groups may request private tours on other dates (subject to availability of guides) by contacting John H. at: . We also offer private tours/observing on a fee basis.

Our next BAS meeting at the Tom Thomson Art Gallery is Wed. Apr 5, 2017 at 7pm. our annual Astronomy Trivia Night. Regular meetings usually consist of a short business meeting and include a speaker or presentation on an astronomy topic. More details can be found in COMING EVENTS.

More details for March and April 2017 events listed below can be found on the COMING EVENTS page. A list of ASTRONOMY EVENTS FOR 2017 is available here: ASTRONOMY EVENTS 2017. Note this list changes from time to time as additional astronomy events are added.
A list of BAS club events (meeting dates, public observing sessions, etc.) for 2017 is separately available here:
BAS 2017 Events Summary.


Comet 41P/Tuttle-Giacobini-Kresak is now circumpolar and visible all night long in the northern sky. Look near the pointer star of the bowl of the Big Dipper in the last week of March. See more at the Universe Today site here: Universe Today Comet 41P and on our VIS.COMETS page.

March 2017

01 Wed 19:00 BAS meets at Thomson Art Gallery 7 pm (AGM and Messier Marathon preview)
01 Wed 13:58 Mars 4.3°N of Moon (Venus in group, too -see SKY SIGHTS)
01 Wed 21:00 Neptune in Conjunction with Sun (not visible)
03 Fri 02:24 Moon at Perigee: 369 065 km
04 Sat 21:38 Aldebaran 0.2°S of Moon (Graze near Teeswater -see SKY SIGHTS)
05 Sun 06:32 FQ
06 Mon 19:00 Mercury at Superior Conjunction (not visible)
09 Thu 02:12 Beehive 3.9°N of Moon
10 Fri 17:20 Regulus 0.8°N of Moon
12 Sun 02:00 Daylight Saving Time begins (clocks ahead 1 hr)
12 Sun 10:54 FM (times in DST from now to Nov 5)
14 Tue 16:04 Jupiter 2.5°S of Moon
18 Sat 13:25 Moon at Apogee: 404 651 km
19 Sun 20:00 Venus and Mercury -two Evening Stars! See below and SKY SIGHTS
20 Mon 06:29 Vernal Equinox (Spring has sprung!)
20 Mon 06:49 Saturn 3.4°S of Moon
20 Mon 11:58 LQ
25 Sat 07:00 Venus at Inferior Conjunction (not visible)
25 Sat BAS Dark of Moon viewing night (Messier Marathon attempt)
27 Mon 22:57 NM
30 Thu 08:39 Moon at Perigee: 363 855 km
30 Thu 09:03 Mars 5.5°N of Moon

April 2017

01 Sat 04:50 Aldebaran 0.3°S of Moon (no occultation locally)
01 Sat 06:00 Mercury at Greatest Elongation: 19.0°E (farthest from Sun at sunset -see
03 Mon 14:39 FQ
05 Wed 19:00 BAS meets at Thomson Art Gallery 7 pm (Elections & Trivia Night)
05 Wed 08:45 Beehive 3.8°N of Moon
07 Fri 00:30 Regulus 0.7°N of Moon
07 Fri 17:00 Jupiter at Opposition (mag -2.46, 44 arc-sec diameter) Big and bright! -see SKY SIGHTS
10 Mon 17:20 Jupiter 2.2°S of Moon
11 Tue 02:08 FM
14 Fri 02:00 Uranus in Conjunction with Sun (not visible)
15 Sat 06:05 Moon at Apogee: 405 478 km
16 Sun 14:39 Saturn 3.2°S of Moon
19 Wed 05:57 LQ
20 Thu 02:00 Mercury at Inferior Conjunction (not visible)
21 Fri 04:16 Mars 3.4°S of Pleiades (Aldebaran nearby as well -see SKY SIGHTS)
22 Sat 08:00 Lyrid Meteor Shower (20 per hour, Moon 20%)
22 Sat BAS Dark of Moon viewing night (Messier Marathon backup night/meteor watch)
23 Sun 13:59 Venus 5.2°N of Moon
26 Wed 08:16 NM
27 Thu 12:18 Moon at Perigee: 359 325 km
28 Fri 13:19 Aldebaran 0.5°S of Moon (Mars, Aldebaran and M45 nearby -photo op! -see SKY SIGHTS)

A list of ASTRONOMY EVENTS FOR 2017 is available here: ASTRONOMY EVENTS 2017. Note this list changes from time to time as additional astronomy events are added.

An astronomical calendar for 2017 (with diagrams of sky sights) is available for download from Alan Dyer's website here: (look at the bottom of the "about Alan" page).


Naked Eye/Binocular Astronomy Events :

Crescent Moon and Mercury in West at end of March

Venus disappears below the western horizon by mid-March leaving Mercury to take over duties as Evening Star in the west. A lovely crescent Moon appears near Mercury March 29, then near Mars on March 30 and at the tip of the nose of Taurus on March 31. It will be a nice sight as it gradually increases its phase but earthshine should be prominent until FQ around Apr 4. Mercury does not last long in the sky. Mercury disappears first around mid-April and Mars will be in solar glare by the end of April and too close to observe by the end of May. Have a look at Mercury in a telescope, it should exhibit a crescent phase getting thinner and thinner rather quickly. Mercury viewing will last only a few weeks. Don't miss it.

The diagram below is from Starry Night c/o Simulation Curriculum and shows the crescent Moon on March 29, 30 and 31 about 8:30 pm DST. Sunset is around 7:50 pm DST so there is not much true dark sky before the group itself sets. A flat western horizon is highly recommended. Click on the image to download a copy.

Moon Mar29-31


From Our Astrophotographers:

Frank Williams latest submission to the "BAS Hall of Astrophotographic Fame" is an image of M17, or the Swan Nebula in Sagittarius.
He writes:
"worked on Swan Nebula M17 during Starfest week from my little observatory in Allenford, and with cloudy weather here got to processing it. This has Luminance 1 hour, red filter 90 minutes, blue and green filters 75 min [using a] 140 mm TEC apochromatic [refractor] sbig STL 11000 camera cooled to -20c (As cold as I could get it running peltier cooler flat out). Processed in Pixinsight slight crop (to remove misaligned frames)".

All I can add is "WOW!"



The countdown to the Great Aug 21 2017 Solar Eclipse continues:

Mar 29, 2006 Solar Eclipse Montage from Antalya Turkey by J.Hlynialuk

If you are looking for a detailed map of the ground track of the Aug 21, 2017 eclipse here it is:
Note: this is a big file -be patient.

More info is available on the
2017 SOL ECLIPSE tab.

ES Fox Observatory Clear Sky Chart

Note: the chart below may not show the current cloud patterns.Click anywhere on the chart for the current display. If chart is still out of date try clearing your browser cache.


Auroral Displays

Auroral displays in our area are declining as we have passed solar maximum. There have been periods of "blank Sun" where sunspots have been totally absent for a time. However, at far northern and southern latitudes near the auroral ovals, sometimes magnetic disturbances from the sun produce auroras even without visible sunspots. So if the auroral oval in the graphic below is showing an intense RED, aurora borealis may be visible from your location. The graphic is updated regularly with time indicated at the top in UT so subtract 5 h to get local EST, or 4 h for DST. (Use the appropriate factor for other time zones). For more information click here: NOAA home website.

Current Auroral Oval not available right now

Click on image below for the
Current Planetary Index Chart or Latest Solar Heliospheric Observatory Images:

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From the Canada-France-Hawaii Telescope Image Archives:
A recent meeting of BAS showed images from the CFHT on Mauna Kea. By popular demand, this space will be devoted to showcasing some of these. Have a look at this site for more: CFHT Image Of Month

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Startrails over CFHT (note Polaris altitude = 20° at Mauna Kea)

Star trails and "see-through" dome

Horsehead Nebula

Star-forming globules in Lagoon Nebula M8

Mauna Kea panaroma in winter

M16 Eagle Nebula

Planetary Nebula in M46

Barnard's Galaxy