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Venus magnitude -4.0
#8
[quote pid='58' dateline='1450440479']

Are you located on the water, or what are you using for a horizon? I'm 50 miles from the sea and have never tried an artificial horizon. I'm curious about the bubble level type of horizon, I have zero idea how that is set up. Anyone use one or recommend one?
[/quote]


I'm a few miles from the Atlantic, Palm Beach, FL.

(The good news is my boat sold yesterday and it is gone).

Using the ocean horizon from the beach is convenient.  When I feel lazy and don't want to walk/drive to the beach for sights an AH is nice except when declination of the Sun goes beyond being able to shoot over 135 degrees (double angle- remember).

Celestaire makes a practice bubble horizon for about $59 and its accuracy is equivalent to its price- low.  But if you need practice without an AH then it's fine.

Practice bubble horizon

[Image: Practice_Bubble__49cd788bdc4f6.jpg]



Celestaire also has a Cassens & Plath bubble horizon attachment that will only fit on the Astra III professional. $950 just for the bubble horizon.  

Cassens & Plath Bubble Horizon


[Image: Professional_Bub_4e9f84d8ac2de.jpg]


There are also Bubble octants flyers used during "the big one" WW-II.  Pretty sure they have a recording  drum on them.

Bubble octant


[Image: s-l1600.jpg]


Paul
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Messages In This Thread
Venus magnitude -4.0 - by CarlosPindle - 12-15-2015, 01:32 PM
RE: Venus magnitud -4.0 - by P.Rutherford - 12-17-2015, 01:41 PM
RE: Venus magnitud -4.0 - by stargazer - 12-17-2015, 04:00 PM
RE: Venus magnitud -4.0 - by Fred_B - 12-17-2015, 07:13 PM
RE: Venus magnitud -4.0 - by stargazer - 12-17-2015, 11:26 PM
RE: Venus magnitud -4.0 - by Fred_B - 12-18-2015, 02:03 AM
RE: Venus magnitud -4.0 - by stargazer - 12-18-2015, 12:07 PM
RE: Venus magnitud -4.0 - by P.Rutherford - 12-18-2015, 03:02 PM
RE: Venus magnitud -4.0 - by jeremyparker - 02-29-2016, 12:05 PM
RE: Venus magnitud -4.0 - by CelNav57 - 02-29-2016, 12:47 PM
RE: Venus magnitud -4.0 - by stargazer - 02-29-2016, 02:41 PM
RE: Venus magnitud -4.0 - by jeremyparker - 03-06-2016, 08:22 AM

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