Waxing Crescent Moon Near the Pleiades


   Thursday evening February 22nd the 7-day old first quarter Moon will be 8-9o from the open star cluster the Pleiades, and about 7o from the open star cluster the Hyades. With my 10×50 binoculars the two star clusters are just out of the field of view, but become visible with a slight nudge of my head!

   
   
   

Click here to go to the Qué tal in the Current Skies web site for monthly observing information, or here to return to bobs-spaces.

Lunar Eclipse – January 31 2018

Here are two pictures from the rising Moon last evening.

   
   And this morning got a late start out the door – made a mistake and let the dogs out in front (north side) while I looked to see where the Moon was. Then chased the ‘guys’ for a while until they peed and sniffed enough and got them back inside.
Drove out east to our community park for a better horizon. Had planned on using 3 cameras but then applied the KISS or Occam’s Razor logic and set up one camera. In reality I had about 30 minutes prior to totality and only a couple of minutes as you see in the video near totality. The clouds were too thick near the horizon.
   This is a sequence taken at 300mm with several exposure times, f-stop and ISO changes along the way.

   
   
   

Click here to go to the Qué tal in the Current Skies web site for monthly observing information, or here to return to bobs-spaces.

A Lunar ‘4-fer’ Plus Planets: Perigee; Ascending Node; Blue Moon; and a Total Lunar Eclipse!!

   Our Moon reaches full phase for the second time this month on Wednesday January 31st at 13:27 UT (7:27 am CST). According to the popular definition for a ‘Blue Moon’ the second full Moon in a month is known as the ‘Blue Moon’. This happens about every 2.5 years with this year being a little more different in that there will be a second Blue Moon month in March.

   Our Moon reaches perigee, (closest distance from Earth), for this orbit on Wednesday January 30st at 9:48 UT (3:38 am CST). At that time the Moon will be at a distance of 28.14 Earth diameters (358,994 km or 221,204 miles) from the Earth.

      On Wednesday January 31st the full Moon will be crossing the plane of the ecliptic moving north relative to the ecliptic. This is known as the ascending node, one of two intersections the Moon’s orbital path has with the ecliptic. The ecliptic is actually the Earth’s orbit and the Moon’s orbit is inclined about 6o from the ecliptic. So there are two node intersections, the ascending and descending nodes.
      
   What do you get when you have the full Moon at a node crossing? An eclipse – in this case a total lunar eclipse. Timing for this eclipse favors viewing from the western half of the continental United States. Here is a link to download a lunar eclipse page information page (PDF) from the NASA eclipse web site
   Mid-eclipse has the darkened Moon a few degrees away from the open star cluster, M-44, commonly known as the Beehive Cluster. Both the Moon and tM-44 will fit within the field of view of binoculars.
   Here is a summary of the eclipse event starting times from the NASA Eclipse web site. My local time, CST, is UT-6 hours. An important time will be local sunrise-moonset time. For me local sunrise and Moon set time is 7:26 am CST meaning that totality will be in progress as the Moon sets. Here is a link to the Sun and Moon Data calculator web page at the U.S.N. Observatory so you may determine your local sunrise/moon set time. Here is a link to the Hermit Eclipse web site for more information about the eclipse and an interactive map showing eclipse event particulars.
P1 = 10:51 UT 4:51 CST
U1 = 11:48 UT 11:48 CST
U2 = 12:51:47 UT 6:51 CST
U3 = 14:07:51 UT 8:07 CST
U4 = 15:11:11 UT 9:11 CST
P4 = 16:08:27 UT 10:08 CST

   As the eclipsed Moon is setting in the west turn toward the south and east to see Jupiter, Mars, and Saturn plus the bright stars Spica and Antares.

   
   
   
   
   
   

Click here to go to the Qué tal in the Current Skies web site for monthly observing information, or here to return to bobs-spaces.

Taurus Sniffs the Moon!

   Saturday evening November 2nd the 14.5-day old waxing gibbous Moon (full Moon tomorrow) will be a couple of degrees from the reddish star Aldebaran in Taurus the Bull. Aldebaran is at one end of a v-shaped open star cluster, the Hyades, that makes up the face of Taurus. Because of its reddish color it has been described as the angry eye of the bull.
   Normally the Hyades are a great view with binoculars as is the Pleiades, another open star cluster that is often described as a ‘baby dipper’.

   
   
   

Click here to go to the Qué tal in the Current Skies web site for monthly observing information, or here to return to bobs-spaces.

November Moon at Ascending Node

   Friday November 10th the last quarter Moon will be crossing the plane of the ecliptic moving north relative to the ecliptic. This is known as the ascending node, one of two intersections the Moon’s orbital path has with the ecliptic. The ecliptic is actually the Earth’s orbit and the Moon’s orbit is inclined about 6o from the ecliptic. So there are two node intersections, the ascending and descending nodes.


   On November 10th the 22-day old last quarter Moon will be within the boundaries of Cancer the Crab and about 2-3o from M-44 the Beehive open star Cluster, and about 6o from Dwarf Planet Ceres.

   The three are close enough for all to fit within the field of view of binoculars.

   Does our Moon actually go around the Earth as many graphics show? From our perspective on the Earth the Moon appears to circle around the Earth. However, in reality, the Moon orbits the Sun together with the Earth*

*Click here to read my 2006 Scope on the Sky column “The Real Shape of the Moon’s Orbit”. (PDF)

Read this very informative article about the Earth-Moon system and their orbital motions, written by Joe Hanson. “Do We Orbit the Moon?”

   
   
   

Click here to go to the Qué tal in the Current Skies web site for monthly observing information, or here to return to bobs-spaces.

Ceres Gets Buzzed

   Tuesday morning October 17th the Dwarf Planet Ceres will be within about 3o from M-44, the open star cluster commonly known as the Beehive Cluster. Both will easily fit within the field of view of binoculars and with some careful observation Ceres at 8th magnitude might be identified just to the left from M-44 which appears as a 4th magnitude ‘smudge’ of light.

   
   
   

Click here to go to the Qué tal in the Current Skies web site for monthly observing information, or here to return to bobs-spaces.

Waning Crescent Moon Near Dwarf Planet Ceres, and M-44

   Friday morning October 13th, in the hours before sunrise, look toward the eastern horizon for the 23-day old waning crescent Moon to be about 15o east, to the left from the star Procyon (0.37 apparent magnitude). The Moon will also be to the west, right, about 4o from the open star cluster M-44, the Beehive Cluster, and about 6o from Dwarf Planet Ceres.

   The above graphic is set for 3:30 am CDT and not shown in that graphic are the planets Venus and Mars. You may see them here in this graphic set for two hours later – 6:30 am CDT.

   
   
   

Click here to go to the Qué tal in the Current Skies web site for monthly observing information, or here to return to bobs-spaces.