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Mercury feb 2013 drawings

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#1 ROBERT FREE

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Posted 21 February 2013 - 04:24 PM

at half phase merc size is 7 1/2 seconds of arc.

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#2 Dean Norris

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Posted 21 February 2013 - 04:32 PM

Robert,

Excellent sketch of the phases of Mercury. Your sketches show how quickly the orientation of the Mercury and Earth change.

Thanks for posting. Dean

#3 ROBERT FREE

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Posted 21 February 2013 - 05:23 PM

thx dean,use to have an 8'cave astrola many years ago.great optics an tom cave was a legend.

#4 Edward E

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Posted 22 February 2013 - 12:41 PM

Very nice sketches. Thanks for posting them. It's amazing how fast Mercury goes through the first quarter phase.

#5 Astrodj

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Posted 22 February 2013 - 02:06 PM

Thanks for the sketches. Nice timeline.


thx dean,use to have an 8'cave astrola many years ago.great optics an tom cave was a legend.


True; some would even say notoriously so in the latter years of the company. I personally had a good (if somewhat lengthy) experience when buying my 10" Cave in 1975. Others I have talked to were not so fortunate in the late 70's.

Sorry, off topic. I have never observed Mercury with my Cave 10". I should, it's a great scope.

#6 Aquarellia

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Posted 24 February 2013 - 09:18 AM

Very nice sketches, thanks.

#7 SteelStar

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Posted 24 February 2013 - 11:19 AM

Very nice sequence of observations. The best I could do this time around was a bino view through tree limbs as the weather didn't cooperate. I like the fact you were able to follow Mercury several times and show the changing phase. I just do not have a good clear western horizon to allow this.

Thanks for the view. Good effort and well done.

#8 ROBERT FREE

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Posted 24 February 2013 - 10:24 PM

well steel,i did this all in daylite. a period from feb 1st till the 22nd with an 8"sct,one gets much better views that way an much better contrast.

#9 azure1961p

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Posted 25 February 2013 - 06:37 AM

Very nice accounts Mr. Free! I enjoyed the progression through successive observation.

Pete

#10 ROBERT FREE

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Posted 25 February 2013 - 08:58 AM

thank you pete,the last few days the weather didnt co- operate as i tried to see the elusive skinny crescent but the magnitude drops dramatically an is at the limit of viewing in daylite anyway an almost impossible but i have seen it maybe 3-4 times in 40 years .venus so much easier but it wont be till mid may for that.

#11 SteelStar

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Posted 25 February 2013 - 09:04 AM

well steel,i did this all in daylite. a period from feb 1st till the 22nd with an 8"sct,one gets much better views that way an much better contrast.


Yes, I have seen it in daylight before but just didn't this time because of weather and being lazy. I am planning on catching Mercury earlier in the day come late May/June when it will be in a nice conjunction with Jupiter and Venus. Should be easy to find Venus first and go from there.

Again, nice observations.

#12 ericj

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Posted 11 March 2013 - 11:56 AM

Nicely done sketches and observations of Mercury Robert. Shows how quickly Mercury goes through its phases.

Best,

Eric Jamison


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