DAS Activities

DAS Public Nights

Public Nights
Tuesday and Thursday at
DU's Historic Chamberlin Observatory
Current start time is 8:30 pm
Costs to the public are:
$4.00 adults, $3.00 children

To book, please click:

Public Night

Astro Calendar

“What’s Out Tonight – July 2018”
Star Chart and Data
(courtesy of Ken Graun © 2018)

Astronomical Things to See and Do – July 2018

(NOTE: to find the MST for UT, subtract 7 hours from the UT listing)

Planetary Phenomena

Planets in July 2018LocationAvg MagnitudeAvg SizeNotes
MercuryNot favorable for observing-0.37.8"
VenusEvening Sky through Autumn-4.116.9"
MarsIn Western
-1.5 17.0"
JupiterIn Western Libra -2.443.4"
SaturnIn central Sagittarius; in SE in late evening0.1 18.3"
UranusDawn sky in Pisces5.93.4"
NeptuneMorning twilight, in

Moon Phenomena

Moon PhenomenaDateTime (UT)Comment
3rd QuarterJuly 6th 07 51
New MoonJuly 13th 02 48Lunation 1182
1st QuarterJune 19th 19 52
Full MoonJune 27th 20 20Summer Moon
(Colonial American)
Smallest in 2018

Meteor Showers

S ð Aquariids  July 29th 10h UT  ZHR=20  Full Moon  RA 22 44 Dec -16

American Meteor Society: http://www.amsmeteors.org/meteor-showers/meteor-shower-calendar/


Weekly Comet News: http://www.aerith.net/comet/weekly/current.html

NASA Web page on comets: http://nssdc.gsfc.nasa.gov/planetary/planets/cometpage.html

Notable Objects for Deep Sky Observers

Catalog #DescriptionRight
NGC 3242Ghost of Jupiter
(Planetary Nebula)
10 24.8-18 38Hydra
M3Globular Cluster13 42.2+28.23Canes Venatici
M104Sombrero Galaxy12 40.0-11 37Virgo
NGC 3198+Elongated Galaxy10 19.9+45 33Ursa Major
NGC 2903Large bright barred spiral galaxy09 32.2+21 30Leo
NGC 2841Bright elongated spiral galaxy09 22.0 +50 58Ursa Major
M67Open Star Cluster08 50.4+11 49Cancer
M81* & 82Galaxies09 55.6+69 04Ursa Major
M97Owl Nebula (PN)11 14.8+55 01Ursa Major
NGC 5907Edge-on Spiral Galaxy15 15.9+56 20Draco
NGC 7331Spiral Galaxy22 37.1+34 25Pegasus
M77Active Nucleus Galaxy02 42.7-00 01Cetus
NOTES+ Challenge Object*If multiple, brightest component.

Observing Opportunities

Open House – Saturday, July 21st 8:30 pm – 11 pm at DU’s Historic Chamberlin Observatory

EGK Dark Site – Any night or Dark Sky Weekend, July 14th

DAS Volunteer Opportunities