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 – April 2018”
Star Chart and Data
(courtesy of Ken Graun © 2018)

Astronomical Things to See and Do – April 2018

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

Planetary Phenomena

Planets in April 2018LocationAvg MagnitudeAvg SizeNotes
MercuryMorning sky2.611.0"
VenusEvening Sky through Autumn-3.910.8"
MarsIn Sagittarius above Teapot0.1 9.2"1.3 deg from Saturn on April 2nd
JupiterProminent in morning twilight in central Libra (retrograding).-2.443.5"
SaturnIn central Sagittarius; in SE in morning twilight0.5 17.0"Conjunction with Mars on April 2nd
UranusToo close to Sun5.93.4"Solar conjunction in April
NeptuneIn morning twilight.8.02.2"

Moon Phenomena

Moon PhenomenaDateTime (UT)Comment
3rd QuarterApril 8th 7 09
New MoonApril 16th 1 57Lunation 1179
1st QuarterApril 22nd21 46
Full MoonApril 30th 0 58Planter's Moon

Meteor Showers
Lyrid Meteors peak on Sunday, April 22nd 18 00 UT (1 AM MST) – 1st Q Moon 20/Hr

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
M66* M65 & NGC 3628Leo Triple11 20.2+12 59Leo
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
M76Planetary Nebula
(Little Dumbbell)
01 42.4+51 34Perseus
M1The Crab Nebula05 34.5+22 01Taurus
M46* & NGC 2438Open Star Clusters07 41.8-14 49Puppis
M37Open Star Cluster05 52.4+32 33Auriga
NOTES+ Challenge Object*If multiple, brightest component.

Observing Opportunities

Open House – Saturday, April 21st 7:30 pm – 11 pm at DU’s Historic Chamberlin Observatory

EGK Dark Site – Any night or Dark Sky Weekend, April 21st

DAS Volunteer Opportunities