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Posts Tagged ‘Sleeping Bear Dunes National Lakeshore’

07/13/2018 – Ephemeris – Sun ‘n Star Party set for tomorrow at the Sleeping Bear Dunes National Lakeshore

July 13, 2018 Comments off

Ephemeris for Friday, July 13th. Today the Sun will be up for 15 hours and 17 minutes, setting at 9:26, and it will rise tomorrow at 6:10. The Moon, 1 day past new, will set at 10:04 this evening.

Tomorrow afternoon and evening will be what we call a Sun & Star Party at the Sleeping Bear Dunes National Lakeshore Hosted by the Grand Traverse Astronomical Society and the rangers of the park. This event will be held at the Dune Climb. From 4 to 6 p.m., the Sun will be featured using two types of telescopes, one showing the Sun’s photosphere in what we call white light, looking for sunspots, and another showing the chromosphere above it in the light of hydrogen giving a completely different view.

Starting at 9 p.m. will be a star party, actually mostly a planet party, viewing the planets Venus, Jupiter and Saturn, plus near the end of the night, Mars. There will be other celestial wonders visible in the deepening twilight. If cloudy one or both events will be cancelled. The astronomers will be back Sunday night if that night is clear.

The times given are for the Traverse City/Interlochen area of Michigan. They may be different for your location.

Addendum

Dune Climb Setup

This in the beginning of setup for the October 21, 2917 star party at the dune climb. Taken early while there was enough light. The dune blocks up to 12 degrees from the southwest to northwest, but the rest of the horizon is quite low. Venus will be high enough to clear the dune for during the day and early evening.

Setting up my telescopes at the Dune Climb

My equipment at the Dune Climb on October 21, 2017. My 11″ Dobsonian is in the foreground. The tripod for my Celestron 8 is laying on the ground behind it yet to be set up.
I pointed the Dobsonian at a variety of deep sky objects, while the C8 was pointed to Saturn and tracking that night.

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06/22/2018 – Ephemeris – Sun ‘n Star Party scheduled for tomorrow June 23

June 22, 2018 Comments off

Ephemeris for Friday, June 22nd. Today the Sun will be up for 15 hours and 34 minutes, setting at 9:32, and it will rise tomorrow at 5:57. The Moon, 2 days past first quarter, will set at 3:25 tomorrow morning.

Tomorrow afternoon and evening will be what we call a Sun & Star Party at the Sleeping Bear Dunes National Lakeshore. This event will be held at the Dune Climb. From 4 to 6 p.m., the Sun will be featured using two types of telescopes, one showing the sun’s photosphere in what we call white light, hoping the Sun will produce a sunspot of two, and another showing the chromosphere above it in the light of hydrogen giving a completely different view with possibly more activity. Starting at 9 p.m. will be a star party, actually really a planet party, viewing the planets Venus, Jupiter and Saturn, plus the Moon. There will be other objects visible in the deepening twilight.  The event is due to the cooperation of the Grand Traverse Astronomical Society and the park rangers.

Update:  The Sun and Star Parties are subject to cancellation separately based on weather.  Check back to this here if there is a cancellation or call the park at 231-326-4700.  The park’s web page for this event is here.   If Saturday night star party is cancelled, some members of the society will hold their own observation session at the Dune Climb Sunday night.  Notification will be posted by 7 p.m. here if that event will take place.  We also invite anyone with a telescope and experienced in its use to join us.  For anyone who wants to have us look at their telescope or give them tips, come to our NMC Rogers observatory star parties which are listed on our society web site: http://www.gtastro.org. Those star parties are less hectic.

The times given are for the Traverse City/Interlochen area of Michigan. They may be different for your location.

Addendum

Dune Climb Setup

This in the beginning of setup for the October 21, 2917 star party at the dune climb. Taken early while there was enough light. The dune blocks up to 12 degrees from the southwest to northwest, but the rest of the horizon is quite low. Venus will be high enough to clear the dune for most of the evening.

Setting up my telescopes at the Dune Climb

My equipment at the Dune Climb on October 21, 2017. My 11″ Dobsonian is in the foreground. The tripod for my Celestron 8 is laying on the ground behind it yet to be set up.
I pointed the Dobsonian at a variety of deep sky objects, while the C8 was pointed to Saturn and tracking that night.

05/25/2018 – Ephemeris – Star party scheduled for Sleeping Bear Dunes National Lakeshore May 26, 2018

May 25, 2018 Comments off

Ephemeris for Friday, May 25th. Today the Sun will be up for 15 hours and 9 minutes, setting at 9:15, and it will rise tomorrow at 6:04. The Moon, half way from first quarter to full, will set at 4:52 tomorrow morning.

Tomorrow night May 26th there will be, weather permitting a star party at Sleeping Bear Dunes National Lakeshore, this will take place at the Dune Climb. Telescopes will take over the parking lot closest to the Dunes The event starts at 9 p.m., while it’s still light out and the location can be found. The nearly full Moon will be first to be spotted, followed by Venus and Jupiter. The planet Jupiter’s four brightest moon will be seen along with its cloud bands. Starting at 9 p.m. there will be a short ranger talk, followed by an astronomer to explain what will be seen that night. The star party is made possible by the rangers of the park and the Grand Traverse Astronomical Society.

The times given are for the Traverse City/Interlochen area of Michigan. They may be different for your location.

Addendum

Dune Climb Setup

This is the beginning of setup for the October 21, 2017 star party at the dune climb. Taken early while there was enough light. The dune blocks up to 12 degrees from the southwest to northwest, but the rest of the horizon is quite low. Venus will be high enough to clear the dune for most of the evening.  The ladder is up to assemble the society’s 25 inch “Emmettron” Obsession Dobsonian telescope.  The telescope was overhauled including having the mirror aluminized and new encoders over the winter, thanks to Don Flegel our telescope wrangler.  Click to enlarge.  Photo by Bob Moler.

10/20/2017 – Ephemeris – Last star party at Sleeping Bear Dunes this year is tomorrow night

October 20, 2017 1 comment

Ephemeris for Friday, October 20th. The Sun will rise at 8:04. It’ll be up for 10 hours and 44 minutes, setting at 6:49. The Moon, 1 day past new, will set at 7:43 this evening.

A star party celebrating the 47th anniversary of the Sleeping Bear Dunes National Lakeshore will be held tomorrow evening, October 21 2017, starting at 8 p.m. at the Dune Climb if it’s clear. This is a change in location from some of the earlier notifications. It will be hosted by the Park Rangers and the Grand Traverse Astronomical Society. The society invites all to come, especially those with telescopes willing to share the wonders of the Milky Way, which will span the skies from horizon to horizon. The park has one of the darkest skies in the Lower Peninsula, and the Milky Way is especially impressive in late summer and early autumn. Please call 231-326-4700, ext. 5005 if in doubt about weather conditions. A decision will be made by 2 hours before the event.

The times given are for the Traverse City/Interlochen area of Michigan. They may be different for your location.

09/22/2017 – Ephemeris – September star party at Sleeping Bear Dunes National Lakeshore tomorrow night

September 22, 2017 1 comment

Ephemeris for Friday, September 22nd. The Sun will rise at 7:29. It’ll be up for 12 hours and 9 minutes, setting at 7:39. The Moon, 2 days past new, will set at 9:14 this evening.

Autumn starts at 4:02 this afternoon.

The first star party of autumn will be held at the Sleeping Bear Dunes National Lakeshore tomorrow evening starting at 9 p.m. at the Dune Climb if it’s clear. It will be hosted by the Park Rangers and the Grand Traverse Astronomical Society. The society invites all to come, especially those with telescopes willing to share the wonders of the Milky Way, which will span the skies from horizon to horizon, and the planet Saturn. The park has one of the darkest skies in the Lower Peninsula, and the Milky Way is especially impressive in late summer and early autumn.

Please call 231-326-4700, ext. 5005 if in doubt about weather conditions. A decision will be made by 2 hours before the event.

The times given are for the Traverse City/Interlochen area of Michigan. They may be different for your location.

08/21/2017 – Ephemeris – Today’s the day of the solar eclipse!

August 21, 2017 1 comment

Ephemeris for Monday, August 21st. The Sun rises at 6:52. It’ll be up for 13 hours and 45 minutes, setting at 8:37. The Moon is new today, and won’t be visible, except when it’s covering the Sun.

This is it! Later today, we will see, clouds willing, the Great American Solar Eclipse. The Grand Traverse Astronomical Society and the Sleeping Bear Dunes National Lakeshore will host an eclipse watch at the Dachow farm on M-22 at Port Oneida Road. There will be telescopes to view the eclipse and one to project the eclipse on a screen. The first 100 or so visitors can get a pair of eclipse glasses. The times, if you are in the Grand Traverse area, say near Traverse City and Interlochen, are these: The eclipse starts at a couple of minutes before 1 p.m., The maximum eclipse will be at 2:20 when nearly 75% of the Sun will be covered by the Moon. The eclipse will end about 3:40 p.m. These times are within a few minutes for other locations in northern Michigan.

The times given are for the Traverse City/Interlochen area of Michigan. They may be different for your location.

Addendum

Maximum eclipse in Traverse City

What the maximum eclipse would look like with proper filtering in the Grand Traverse area. Created using Stellarium.

Pinhole projection

Pinhole projection is the simplest way to project the Sun’s image.
A long box can be used to project the image inside. The diameter of the pin hole is a compromise between sharpness and brightness of the image.
The farther the image is projected the larger it is.
The throw of the image can be increased by using a mirror masked with a quarter of a inch or larger hole and sending the image 10 or more feet away.

Binocular projection

I’m demonstrating using binoculars to project the Sun. Photo by Bea Farrell (granddaughter).

Tree provided pinholes

Let nature provide the pinholes.
Sit under in the shade.
Stay cool,
And watch the Sun’s images on the ground.

The danger at looking at the Sun without proper filter

The danger with looking at the Sun without proper filter. Credit: University of Waterloo.

08/18/2017 – Ephemeris – More eclipse information

August 18, 2017 1 comment

Ephemeris for Friday, August 18th. The Sun rises at 6:48. It’ll be up for 13 hours and 53 minutes, setting at 8:42. The Moon, 3 days before new, will rise at 4:16 tomorrow morning.

OK here you are 3 days before the solar eclipse, where to you go and when do you look to see it. Circle next Monday, August 21st. The times, if you are in the Grand Traverse area, say near Traverse City and Interlochen, are these: The eclipse starts at a couple of minutes before 1 p.m., The maximum eclipse will be at 2:20 when nearly 75% of the Sun will be covered by the Moon. The eclipse will end about 3:40 p.m. For locations south and west of Traverse City the eclipse will start up to a few minutes earlier, to the north and east, up to a few minutes later. The Grand Traverse Astronomical Society and the Sleeping Bear Dunes National Lakeshore will host an eclipse watch at the Dachow farm on M-22 at Port Oneida Road.

We’ll be at Friday night Live night on the 200 block of Front Street, in front of Orvis Streamside,  in Traverse City to demonstrate these methods. Come between 5:30 and 7:30 p.m. for demonstrations if it’s clear.

The times given are for the Traverse City/Interlochen area of Michigan. They may be different for your location.

Addendum

Maximum eclipse in Traverse City

What the maximum eclipse would look like with proper filtering in the Grand Traverse area. Created using Stellarium.