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Photo of the Month for April, 2017

Sunrise over the San Francisco Peaks

© 2017 Russ Ruggles

Has the mother ship returned??

. . . Russ       








March for Science - Flagstaff

Date and Time: Sat, Apr 22, 2017 2:00 PM (Local Time)

The March for Science - Flagstaff will begin at Thorpe Park, at the south ramada (Thorpe Rd. & Santa Fe Ave.) , on April 22, 2017 at 2:00pm. The March will proceed down Aspen Street to Humphreys Street, and down Humphreys Street to the Flagstaff City Hall lawn at the corner of Humphreys Street and Route 66.










FOR SALE
( New Items )

Item 1: Astro-Tech 8" F/4 imaging Newtonian Telescope
with 12v mirror cooling fan 8x50 finder scope and bracket Dual speed Moonlite focuser+1" spacer and another spacer that I believe is 1/2" 13" D-series dovetail StellarVue Multi-Reticle finder and base 50mm extension tube for 2" pieces 2" to 1.25" adapter Other upgrades than what is listed below, stiffer springs have been installed on the mirror cell for better stability, the inside baffling and sides at the front of the scope have been flocked to prevent stray light, triangle center spot installed on the primary mirror. Price: $625

Item 2: Coulter 8" on a Dobsonian mount
Great light gathering power and easy setup. Additional focuser and dust cap included. Price: $250

Click here for ( Full list of Items for sale )



Item 1






If you are interested then please contact us at info@coconinoastro.org
and you will connected to Eric who is the seller.

Click here for ( Full list of Items for sale )



Item 2



If you are interested then please contact us at info@coconinoastro.org
and you will connected to Eric who is the seller.

Click here for ( Full list of Items for sale )







Click here for

The August 21, 2017 Eclipse Info from NASA








Activities for April, 2017



Saturday, April 8, 2017

Dr. Donald Hutter, NPOI, Naval Obs.


Title: “Optical Interferometry, the Super-Eyes of Astronomy”

The Navy Precision Optical Interferometer is an array of ten telescopes with the resolving power equivalent to a single telescope with a 325 foot mirror, and capable of measuring high-precision stellar positions, and sizes, and able to image features on their surfaces. Dr. Hutter will present a short description of the principles and history of optical interferometry, and describe the NPOI facility at the dark-sky site on Anderson Mesa, along with recent scientific results and prospects for the future.

CAS Monthly Meetings and Astronomical Programs are held the Saturday closest to the Full Moon at the Mars Hill Campus of Lowell Observatory, Hendricks Center for Planetary Studies Auditorium (6:45 pm - 8:00 pm., unless otherwise noted) followed by refreshments, and informal discussion. Meetings are open free to the public.



Club Observing
Saturday - ( at Sunset )

April 22, 2017 ( 7:08 pm ) (with Lyrid meteors)












What's New in April, 2017



2017 : Jan || Feb || Mar || Apr || May || June || July || Aug || Sept || Oct || Nov || Dec





Asteroid 2014 J025 April 19, 2017

© 2017 Ernie Webb




Here is a shot of the asteroid passing through Draco last night. The brightest star is epsilon Draconis, and the asteroid trail is in the lower left corner. The photo was taken at 11:03. The exposure was 1 min through the 120 mm at prime focus (f/8.3) and ISO 3200. The asteroid passes through Coma Berenices tonight, and will be next to M64 just before 11 PM. Sky&Telescope online has a detailed map. I did not spot the asteroid in the scope. Tonight I will try to spot it with the 12.5".

. . . Ernie       





Centaurus A March 7, 2017

© 2017 Klaus Brasch



Bullialdus March 7, 2017

© 2017 Klaus Brasch




Here are two addition images I obtained at AZ Sky Village last week under superb sky conditions.
  1. The awesome globular Omega centauri shot with my AP155 apo at f/5.5, cropped and enlarged.

  2. The summer Milky Way rising shot with a Canon 40mm wide angle lens and IDAS LPS-V4 filter
All images are stacks of multiple frames taken with a Canon 6D

. . . klaus       





Centaurus A March 7, 2017

© 2017 Klaus Brasch



Bullialdus March 7, 2017

© 2017 Klaus Brasch




Jeff, Jim, Kwang and I spent a wonderful few days and nights at Arizona Sky Village last week to observe and image under very dark skies and a gorgeous setting. Although sky conditions varied from superb to scary (one nasty T-storm), we had a great time.

I have attached two images, both taken with an AP-155 Starfire apo at f/5.5 with a modified Canon 6D, shooting at ISO 6400 through an IDAS LPS-V4 filter under excellent seeing and transparency. The first is the Cone or Christmas tree nebula complex in Monocerus. Note the small comet like feature at bottom left, Hubble's Variable Nebula. The other image is of Centaurus A (NGC 5128) a most unusual galaxy.

. . . klaus       





Arzachel to Ptolemy March 7, 2017

© 2017 Klaus Brasch



Bullialdus March 7, 2017

© 2017 Klaus Brasch



ClaviusTycho mosaic March 7, 2017

© 2017 Klaus Brasch




I finally enjoyed an hour or so of pretty good seeing around sunset Tuesday night and managed to capture some decent web cam images of the Moon. All were taken with the C-14 HD at f/11 with the ZWO AS1 120 camera shooting in monochrome through a deep red filter. Each final or mosaic is a combo of the 10% best images from AVIs of 1200-1500 clips, combined in AutoStakkert and processed in Registax.

. . . klaus       





Moonrise March 17, 2017

© 2017 Ernie Webb




Full moon rising [over a darkened Flagstaff] as seen from the Mars Hill overlook.

. . . Ernie       





Sunrise March 21, 2017

© 2017 Russ Ruggles




Has the mother ship returned??

. . . Russ       








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