Moon Near Heart of the Lion

   Sunday evening the 4.3-day old waxing crescent Moon will be about 4o from the star Regulus, the heart of Leo the Lion. Spread across the sky from west to east are three planets, Venus, Jupiter, and Saturn.

   
   
   

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.


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June Moon at Ascending Node

   Saturday June 16th the waxing crescent 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 Saturday evening June 16th the 3.5-day old waxing crescent Moon will be about 8o east (left) from the planet Venus and about 3o from the open star cluster, M-44 also, known as the ‘Beehive Cluster’.

   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.


Also Follow me and other great resources at Feedspot.

Moon Passes the Twins and Venus

   Friday evening June 15th the 3.75-day young waxing crescent Moon will be to the left from the ‘Twin’ stars of Pollux and Castor. A little further east or higher above the Moon is the ‘hard-to-miss’ planet Venus.

   Over the next 24 hours the Moon will have orbited eastward and by the same time Saturday evening June 16th the waxing crescent Moon will be ‘above’ Venus, or further east than Venus is.

   
   
   

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.


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June Perigee Moon

   Our Moon reaches perigee, (closest distance from Earth), for this orbit on Thursday June 14th. At that time the Moon will be at a distance of 28.18 Earth diameters (359,500 km or 223,383 miles) from the Earth.

   Does our Moon actually go around the Earth as this graphic shows? 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*

   Thursday evening May 14th, shortly after sunset local time (8:26 CDT), look toward the western horizon for a conjunction between a thin 1.25-day young waxing crescent Moon and the innermost planet Mercury. The two will be about 2-3o apart but very low over the western horizon.

   *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 go to bobs-spaces.


Also Follow me and other great resources at Feedspot.

Young Crescent Moon in Conjunction with Mercury

   Thursday evening June 14th the thin 1.25-day young waxing crescent Moon will be about 2-3o from the innermost planet Mercury as the two are setting about an hour after sunset local time.
    As the graphic shows both will be low over the horizon before the sky is dark so this may be an interesting challenge to see either one or both. On the other hand further east, higher above the horizon, and very bright appearing is the other inner planet, Venus.

   
   
   

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.


Also Follow me and other great resources at Feedspot.

Venus and the Twins


   Over the next few evenings, June 7th to 10th, the inner planet Venus will pass the star Pollux, marking the head of one of the Gemini Twins. Pollux is on the left side as we view the ‘Twins’ face-on. This animated graphic is set for 10 pm CDT and shows the daily movement of Venus toward the east, combined with the daily motion of the stars toward the west as the Earth revolves around the Sun.


   The separation between Venus and Pollux will vary from about 4.5o to about 5.5o allowing at least these two to fit within a binocular field of view.

   
   
   

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.

It’s All About Exposure

   Last night after sunset I set out to try and capture a picture of Venus less then 1o from the open star cluster M-35, near the feet of the Gemini Twins. Additionally the first quarter Moon was within about 1.5o from the star Regulus, the ‘heart’ of Leo the Lion, and also easily seen as the bottom of the backward question shape this constellation is best known for. Since my western skies are illuminated by the lights from an athletic field, and the eastern suburbs of Kansas City, MO. the limiting magnitude is around 2 or 3, meaning that the dimmest stars easily seen in that direction have to be at least 3rd magnitude or brighter. So with that in mind I took over 60 pictures with various camera settings but the skies were just too bright to capture the light from the stars making up M-35.

   Then I turned my attention to the Moon and Regulus. Regulus was close enough to the Moon that it’s light was nearly washed out by the Moon’s reflected Sun light. The difficulty of catching both has to do with camera settings. For example opening the shutter and increasing the exposure time washes out the Moon but allows Regulus to be seen.
   I use a Cannon Rebel EOS T7i with a touch screen allowing me to change settings very easily and see the effect in the change in real time.
   Camera settings: 300 mm; f/13; 1/40 sec.; ISO-400


   For this picture I increased the exposure time but left the other settings as they were. The Moon is larger in this picture because I zoomed in on the original before cropping it for this blog.
   Camera settings: 200 mm; f/13; 5 sec.; ISO-400

   
   
   
   
   

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.