ROBERT FREE
super member
Reged: 03/20/11
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Mercury feb 2013 drawings
#5693057 - 02/21/13 04:24 PM Attachment (28 downloads)
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at half phase merc size is 7 1/2 seconds of arc.
Edited by ROBERT FREE (02/21/13 04:26 PM)
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Dean Norris
Pooh-Bah
Reged: 11/05/08
Loc: Santa Cruz, Ca
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Re: Mercury feb 2013 drawings
[Re: ROBERT FREE]
#5693079 - 02/21/13 04:32 PM
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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
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ROBERT FREE
super member
Reged: 03/20/11
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Re: Mercury feb 2013 drawings
[Re: Dean Norris]
#5693174 - 02/21/13 05:23 PM
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thx dean,use to have an 8'cave astrola many years ago.great optics an tom cave was a legend.
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Edward E
professor emeritus
Reged: 03/26/06
Loc: Tucson, Arizona
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Re: Mercury feb 2013 drawings
[Re: ROBERT FREE]
#5694637 - 02/22/13 12:41 PM
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Very nice sketches. Thanks for posting them. It's amazing how fast Mercury goes through the first quarter phase.
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Astrodj
sage
Reged: 08/24/11
Loc: Missouri
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Re: Mercury feb 2013 drawings
[Re: ROBERT FREE]
#5694817 - 02/22/13 02:06 PM
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Thanks for the sketches. Nice timeline.
Quote:
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.
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Aquarellia
sage
Reged: 10/27/12
Loc: Val d'Issole, Provence, France
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Re: Mercury feb 2013 drawings
[Re: Astrodj]
#5697920 - 02/24/13 09:18 AM
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Very nice sketches, thanks.
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SteelStar
member
Reged: 11/08/09
Loc: Oklahoma
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Re: Mercury feb 2013 drawings
[Re: Aquarellia]
#5698096 - 02/24/13 11:19 AM
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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.
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ROBERT FREE
super member
Reged: 03/20/11
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Re: Mercury feb 2013 drawings
[Re: SteelStar]
#5699026 - 02/24/13 10:24 PM
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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.
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azure1961p
Postmaster
Reged: 01/17/09
Loc: USA
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Re: Mercury feb 2013 drawings
[Re: ROBERT FREE]
#5699336 - 02/25/13 06:37 AM
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Very nice accounts Mr. Free! I enjoyed the progression through successive observation.
Pete
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ROBERT FREE
super member
Reged: 03/20/11
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Re: Mercury feb 2013 drawings
[Re: azure1961p]
#5699436 - 02/25/13 08:58 AM
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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.
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SteelStar
member
Reged: 11/08/09
Loc: Oklahoma
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Re: Mercury feb 2013 drawings
[Re: ROBERT FREE]
#5699444 - 02/25/13 09:04 AM
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Quote:
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.
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ericj
professor emeritus
Reged: 02/17/05
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Re: Mercury feb 2013 drawings
[Re: ROBERT FREE]
#5725800 - 03/11/13 12:56 PM
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Nicely done sketches and observations of Mercury Robert. Shows how quickly Mercury goes through its phases.
Best,
Eric Jamison
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