David's Astronomy - Constallation Highlights

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Constellation Highlights - UMa

Highlights
2007

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Stars

Mizar / Alcor (Ursa Major)
Mizar & Alcor are an optical double
Mizar itself is a double star (Struve 1744)

CCD Image
1s, 2x2 binning, C Filter
2006-08-26 23:30 h UT (#135129)

Lalande 21185 / HIP 54035 (Ursa Major)
Star system with 9th largest proper motion

Annotated CCD Image (50% size)
7 x 30s (average combine), 1x1 binning, C filter
2006-08-08 21:47h UT (#133011-17)

Gliese 412 (Ursa Major)
Nearby star system - 15.8 light years from the Sun
Binary Star WDS VBS 18
A - HIP 54211, B - GCVS WX UMa (1100+44)

Annotated CCD Image (50% size)
7 x 5s exposure (Average median combine), 1x1 binning, C Filter
2006-06-15 00:55 hUT (#128062-68)

Groombridge 1618 (Ursa Major)
Nearby star - 15.9 light years from the Sun
Alt Name : HIP 49908, Gliese 380 (Proper Motion 1.45"/yr)

Annotated CCD Image (50% size)
3 x 15s exposure (average combine), 1x1 binning, C Filter
2006-11-18 03:56 hUT (#153323-29)

ER UMa- CV variable (Ursa Major)
ER UMa is the prototype ER UMa type star. These stars typically spend a third
of their time in superoutburst with a supercycle of 20-50 days. Outside of superoutburst
they typically pack in a rapid succession of normal outbursts, showing one every ~ 4 days

CCD Image
60s exposure, 2x2 binning, C filter,
2007-02-04 23:31h UT (#174370)

SU UMa - Cataclysmic Variable

Animation sequence of images showing variation in SU UMa
(images from 5 separate nights between Apr 2007 & Oct 2007)

Animated CCD Images
180 sec exposure, 2x2 binning, V Filter
2007-04-28 (#192248), 2007-08-08 (#203184), 2007-08-22 (#206056)
2007-08-25 (#207032), 2007-10-17 (#221109)

Clusters

Nebulae

M97 - Planetary Nebula (Ursa Major)

Colour CCD Image
Cropped to Central Area
Red : 3 x 120 sec exposure (average combine) + 1.216 weight
Green : 3 x 120 sec exposure (average combine) + 1.00 weight
Blue : 3 x 180 sec exposure (average combine) + 1.096 weight
Luminance : 5 x 90 sec exposure (average frame), C Filter
Exposure/Colour Weights based on analysis of RGB frames of four G2V Stars
3x3 binning,
Luminance: 2009-04-22 01:05 h UT (#364272-75)
Colour: 2009-05-10 00:56 h UT (#367191-99)
12" LX200R (at f/5.7) + ST-10XME
[ full frame image ]

Galaxies

M100 (Ursa Major) with SN 2006x 2006x was discovered 2006/02/04 by Shoji Suzuki; M. Migliardi (CROSS) (Rochester Supernova site \| Discovery Image \| Discovery Image 2 \| Reference Image) Image below (2006-02-20.9708) was taken 16 days after discovery. Estimated magnitude of 2006x is +13.7 (C filter). This is possibly at around peak brightness, magnitude at discovery was +17 (C)

Annotated CCD Image 5 x 2 min exposure (average combine), 2x2 binning, C Filter 2006-02-20 23:17h UT (#115064-68) un-annotated image

M100 with SN 2006x		M100 Reference Image (2004)

CCD Image (200% size) 5 x 2 min exposure (average combine), 2x2 binning, C Filter 2006-02-20 23:17h UT (#115064-68)		CCD Image (200% size) 5 x 1 min exposure (average combine), 2x2 binning, C Filter 2004-03-29 01:02h UT (#64207-11)

M100 - false colour

CCD Image - false colour, log brightness scaling 5 x 2 min exposure (average combine), 2x2 binning, C Filter 2006-02-20 23:17h UT (#115064-68) [ normal image ]

M81 - spiral galaxy (Ursa Major)

CCD Image (linear scale, 50% size)
90 sec exposure (single frame), 3x3 binning, C Filter
2009-03-10 01:29 h UT (#356259)
12" LX200R (at f/5.8) + ST-10XME

M82 (Ursa Major)

CCD Image Square root scaling, 55% size)
9 x 20s (median combine), 3x3 binning, C Filter
2009-03-10 01:40 h UT (#356266-74)
12" LX200R (at f/5.8) + ST-10XME

M101 - Spiral Galaxy (Ursa Major)

CCD Image (75% size)
3 x 3 min (average combine), 3x3 binning, C Filter
2009-03-10 00:54 h UT (#356245-49)
12" LX200R (at f/5.8) + ST-10XME

M108 - Spiral Galaxy (Ursa Major)

CCD Image, 5 x 30 sec exposure (average combine)
2003-12-08 00:34 to 00:40h UT (#55260-69)
Blur (noise suppression)
Image : 11.6 x 7.8 arc sec
8" LX200 classic + ST-7e

M109 - Spiral Galaxy (Ursa Major)

Annotated CCD Image
(50% size reduction)
3 x 120 sec exposure (average combine), 3x3 binning, C Filter
2009-05-11 22:35h UT (#368056-58)
12" LX200R (at f/5.7) + ST-10XME

M109 - detail

CCD Image (square root scaling)
Image details as above

NGC 3184 - Spiral Galaxy (Ursa Major)

CCD Image
7 x 2 min exposure (average combine), 2x2 binning, C Filter
2008-02-25 01:20 h UT (#268286-92)

NGC 3877 - spiral galaxy (Ursa Major)

CCD Image ( 50% size scaling)
60 sec exposure (single frame), 3x3 binning, C Filter
2009-04-22 00:03 h UT (#364176)
12" LX200R (at f/5.7) + ST-10XME

NGC 3930 - spiral galaxy (Ursa Major)

CCD Image
5 x 180s exposure (average combine), 2x2 binning, C Filter,
2008-02-12 04:48h UT (#262653-57)

NGC 3953 - spiral galaxy with supernova SN 2006bp (UMa)
with supernova SN 2006bp

Annotated CCD Image
5 x 60s exposure (average combine), 2x2 binning, C Filter
2006-05-25 00:32 hUT (#127112-16)

NGC 4036 - galaxy with SN 2007gi

Annotated CCD Image (200% size, cropped)
5 x 120s exposure (average combine),
2x2 binning, C Filter, Log Scale
2007-08-13 22:13 hUT (#204071-75)

NGC 4088 / ARP 18 (Ursa Major)

CCD Image (cropped)
3 x 90s sec exposure (average combine), 3x3 binning, C Filter
2009-04-19 21:59 h UT (#363040-42)
12" LX200R (at f/5.7) + ST-10XME

Hickson 50 - galaxy cluster (Ursa Major)
reportedly the faintest, most challenging of the Hickson catalogue
Distance ~ 2 billion light years

Annotated CCD Image
(50% size reduction)
6 x 90 sec exposure (average combine), 3x3 binning, C Filter
2009-05-11 23:55h UT (#368132-38)
12" LX200R (at f/5.7) + ST-10XME

Hickson 50 - detail / annotated

Annotated Negative CCD Image
(250% size enlargement, cropped)
Image details as above

Part of Abell 1377 (Ursa Major)
Numerous galaxies in this image
PGC 36774 (catalog mag +15.4), PGC 36805 (catalog mag +15.4)
PGC 83507 (catalog mag +16.4), PGC 83509 (catalog mag +16.7),
PGC 36773 (catalog mag +15.8), PGC 36503,
PGC 36747 (catalog mag +16.1), PGC 83497 (catalog mag +16.4),
PGC 83491 (catalog mag +16.6), PGC 83493 (catalog mag +16.2),
PGC 83496 (catalog mag +16.6)
Unlabelled PGC galaxies (catalog mags +17 to +18)
(glare at bottom of image is from 5th mag star HIP 57477)

Annotated CCD Image
5 x 180s exposure (average combine), 2x2 binning, C Filter
2006-12-20 03:07h UT (#167422-26)

Quasar Q0957+561 A/B - Gravitationally Lensed Quasar (Ursa Major)
Gravitationally lensed quasar 8.5 billion light years distance
The pair of quasar images are around magnitude +17 and
have a separation of about 6 arc secs.
[ Other Internet Info/pics on Q0957+561 : 1, 2 , 3 , 4, 5 ]

CCD Image - 250% scaling, cropped & annotated
3 x 2 min exposure (average combine), 2x2 binning, C Filter
2006-02-10 20:49h UT (#114097-99)

Hubble Deep Field (Ursa Major)
In December 1995 the Hubble Space Telescope assembled an image of a
small 2x2' region in Ursa Major over the course of 10 consecutive days.
Known as the Hubble Deep Field (HDF), it was was the deepest ever field
taken at that time and showed tens of thousands of galaxies out to
a distance of 13 billion light years.

With an image of 24 minute (total) exposure, objects as faint as
+19 are visible, including at least 2 of the brightest galaxy objects in HDF
(position of HDF area shown as red polygon)

CCD Image (50% size reduction)
12 x 2 mins (average combine), 3x3 binning, clear filter
2009-04-21 22:52 h UT (#364113-26)
12" LX200R (at f/5.7) + ST-10XME
[ Full Size Image ]

Detail view of HDF area

Negative CCD Image (enlarged, cropped)
Image details as above

Hubble Image

Hubble Deep Field Image
(reduced from HST WFPC2 Mosaic , HST Gallery Image )

This Web Page:	Constellation Highlights - UMa
Last Updated :	2015-05-15
Site Owner :	David Richards
Home Page :	David's Astronomy Web Site

David's Astronomy Pages (Image Gallery)Constellation Highlights - UMa

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Nebulae

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David's Astronomy Pages (Image Gallery)
Constellation Highlights - UMa