12-18-2015, 03:02 PM
[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]](https://www.celestaire.com/images/stories/virtuemart/product/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]](https://www.celestaire.com/images/stories/virtuemart/product/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]](http://i.ebayimg.com/images/g/KXMAAOSwIwhWTB2Q/s-l1600.jpg)
Paul
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
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
There are also Bubble octants flyers used during "the big one" WW-II. Pretty sure they have a recording drum on them.
Bubble octant
Paul