M15 Globular Cluster

60% of the original size


full resolution


Messier 15 or M15 (also designated NGC 7078) is a globular cluster in the constellation Pegasus. It was discovered by Jean-Dominique Maraldi in 1746 and included in Charles Messier's catalogue of comet-like objects in 1764. At an estimated 13.2 billion years old, it is one of the oldest known globular clusters.

M15 is about 33,600 light-years from Earth. It has an absolute magnitude of -9.2 which translates to a total luminosity of 360,000 times that of the Sun. Messier 15 is one of the most densely packed globulars known in the Milky Way galaxy. Its core has undergone a contraction known as 'core collapse' and it has a central density cusp with an enormous number of stars surrounding what may be a central black hole.[citation needed]

Messier 15 contains 112 variable stars, a rather high number. It also contains at least 8 pulsars, including one double neutron star system, M15 C. Moreover, M15 houses Pease 1, one of only four planetary nebulae known to reside within a globular cluster, which was discovered in 1928.[1]

To the amateur astronomer Messier 15 appears as a fuzzy star in the smallest of telescopes. Mid to large size telescopes (at least 6 in./150 mm diameter) will start to reveal individual stars, the brightest of which are of magnitude +12.6.




To the upper left corner of the image it's also visible a very faint Spiral Galaxy IC5115

FLT110
EQ6 Pro
ST10XME

13*3min Blue
9*3min Green
11*3min Red

Total exposure 1h39min

NGC 281 in Mapped Color

57% of the original size


full resolution


NGC 281 is an H II region in the constellation of Cassiopeia and part of the Perseus Spiral Arm. It includes or is near the open cluster IC 1590, the double star HD 5005, and several Bok globules. It is visible in amateur telescopes from dark sky locations. It is sometimes unofficially referred to as the Pacman Nebula owing to its fancied resemblance to the eponymous hero of the arcade game Pac-Man.

[SII], H-alpha, and [OIII] mapped to red, green, and blue, respectively. H-alpha data also used as luminance.
Ha_SIIHaOIII
Ha: 7x10min
SII: 8x10min
OIII: 7x10min

Total exposure only 3h40min under full moon from Kallithea Athens Greece.

M27, The Dumbbell Nebula final

68% of full resolution



full resolution


L(Ha+Red)/R(Ha+Red)GB
Blue 75min
Green 87min
Red 84 min
Ha 510min

Total exposure 12h 36min

M27 , the Dumbbell Nebula

68% of full resolution


full resolution


This is the colour version of the Dumbbell Nebula with (Ha-Red):G:B technique.

See "Color Imaging of Nebulae using Hydrogen-Alpha Data" by: Robert Gendler

M27 , the Dumbbell Nebula in Hydrogen Alpha Light

invert

68% of full resolution

Full resolution

EQ6,FLT110,ST10XME Ha 5nm 8,5 hours exposure.
The Dumbbell Nebula (also known as Messier 27, M 27, or NGC 6853) is a planetary nebula (PN) in the constellation Vulpecula, at a distance of about 1,360 light years.
This object was the first planetary nebula to be discovered; by Charles Messier in 1764. At its brightness of visual magnitude 7.5 and its diameter of about 8 arcminutes, it is easily visible in binoculars, and a popular observing target in amateur telescopes.
Τελικά κατάφερα να μαζέψω τα φωτόνια που ήθελα....με τη βοήθεια του Φεγγαριού μάζεψα λίγα παραπάνω ,αλλά τι να κάνεις αυτά έχει η ζωή...!
EQ6 EQMOD FLT110 TMB FF ST10XME .
510 λεπτά (10x5min + 46x10min) στο 5nm Ηα της Astrodon ή 8,5 ώρες σε 4 νύχτες στη διάρκεια 2 εβδομάδων!!!
Όλη η επεξεργασία έγινε αποκλειστικά στο CCDStack με μια μικρή επέμβαση στα curves στο PS.
Αποθορυβοποίηση με 33% ΝoiseNinja
Καμία αισθητική ή άλλου είδους επέμβαση στα άστρα.
Την 1η νύχτα από λάθος η κάμερα ήταν τοποθετημένη 90 μοίρες clockwise...για αυτό και έχει γίνει crop στην κεντρική περιοχή .
Anacortes Image of the Day 07/26/2009

Williams Optics FLT 110 CCD Inspector Results

Field Curvature Map



3-D Viewer - Edge view



3-D Viewer


These are the typical CCDInspector2 results with the SBIG ST10XME camera used on the FLT110 OTA with TMB dedicated field flattener.
These examples were taken from an imaging session of M27 through the Baader Planetarium luminance filter.
The results show a very flat field.The sensor size is 14.9 x 10 mm with 6.8x6.8 microns pixels.

The CCDInspector2 from CCDWare is a wonderful program!!!!

My current astrophotography setup

Sky-Watcher EQ6 PRO

William Optics FLT110 triplet air-spaced APO lens TMB design

Dedicated TMB field flattener

SBIG ST10XME with CFW9

William Optics ZenithStar II 80mm Doublet ED

Meade DSI

My current astrophotography setup

NGC 6823, NGC 6820 Open cluster and nebulosity in Vulpecula

NGC 6820 is an emission nebula that surrounds open cluster NGC 6823 in Vulpecula, near M27, the Dumbbell Nebula.

The most striking feature is the trunk-like pillar or dust and gas protruding from the east side of the nebula towards the open cluster, NGC 6823 in the west. The center of the open cluster is about two million years old and is predominantly represented by many young, bright blue stars. Outer parts of the cluster intimately involving pillars of emission nebula NGC 6820, contain even younger stars. The huge pillars of gas and dust are probably formed when surrounding gas and dust is pushed and eroded away by radiation from nearby stars. Remarkable dark globules of gas and dust are also visible in the nebula, much as is seen in the better known Eagle Nebula in Serpens or the Lagoon Nebula in Sagittarius.

Open star cluster NGC 6823 is about 50 light years across and lies about 6000 light years away.

Ha 33x5min
W.O FLT110
SBIG ST10XME_CFW9_Astrodon Ha 5nm
EQ6Pro

Sinus Iridum and Plato - color enhanced image

M106 rework

M106 is at a distance of about 22 to 25 million light-years away from Earth
Messier 106 (also known as NGC 4258) is a spiral galaxy about in the constellation Canes Venatici. It was discovered by Pierre Mechain in 1781.It is also a Seyfert II galaxy, which means that due to x-rays and unusual emission lines detected, it is suspected that part of the galaxy is falling into a supermassive black hole in the center.[7] NGC 4217 is a possible companion galaxy of Messier 106.[6]

M106-NGC4248
PGC39615 mag:15,8 PGC2291799 mag:18.2
PGC2832111 mag:30,0
and many more...

W.O FLT110
4''flattener W.O TMB
Sbig ST10XME – sfw9 with Baader LRGB set
W.O ZenithStar 80II ED
Meade DSI I color
EQ6Pro

Total Exposure 5h20min
L:140min R:50 G:55 B:70
CcdSoft, CcdStack, MaximDL, PS2

28-2-2009
Kallithea
Athens
Hellas

NGC4631_NGC4656 rework

LRGB 5h25min
R:G:B 45:60:60 L:150
Imaging with:
FLT110 TMB Field Flattener ST10XME-CFW9 Baader LRGB filter set.
Guiding with:
ZS80ED DSI

14-16/4/2009
Kallithea
Athens
Greece

NGC 4725

NGC4725:mag 9.3 distance 41 million light years
NGC4712:mag 12.5
NGC4747:mag 13.2

LRGB 5h45min
R:G:B 40:40:40 L:225
Imaging with:
FLT110 TMB Field Flattener ST10XME-CFW9 Baader LRGB filter set.
Guiding with:
ZS80ED DSI

17-18/4/2009
Kallithea
Athens
Greece

M82 ...small

M82

Messier 82 (also known as NGC 3034 or the Cigar Galaxy) is the prototype^[3] nearby starburst galaxy about 12 million light-years away in the constellation Ursa Major. The starburst galaxy is five times as bright as the whole Milky Way and one hundred times as bright as our galaxy's center.

This photo is taken under the full moon of Athens!!!

100min total exposure
20x5min lum

8''SCT (LX90 OTA only)
ST10XME
EQ6 Pro

Moon

This is a single 0.5sec exposure with 5nm Ha filter/ST10XME ccd Camera and 8''SCT (LX90 OTA only)
Mount EQ6 Pro

Saturn...2 years before

14/01/2007

Meade 8'' LX90
Televue x2.5 PowerMate
ToUcam 840 Pro II

Mare Humorum

Mare Humorum
17/05/2008

8'' LX90
Imagine Source DBK Color Firewire Planetary camera

NGC 7000 California Nebula

A small part of the NGC7000
24/07/2008 Kallithea Athens Greece

Test shot 2x10min Ha 5nm Astrodon filter
William Optics FLT110
SBIG ST10XME
EQ6 Pro

NGC 6946 unfinished

Unfinished image
only 45 minutes total exposure from Athens Greece
19/7/2008

William Optics FLT110 with TMB flattener
SBIG ST10XME
EQ6PRO
ZenithStar 80 II ED
DSI and PHD GUIDING

Light Pollution in Athens Greece

Night-time light emissions over Greece on 19/09/2001

Modelling of light pollution in suburban areas using remotely sensed
imagery and GIS

C. Chalkiasa,*, M. Petrakisb, B. Psilogloub, M. Lianoub
Department of Geography, Harokopio University
Institute of Environmental Research and Sustainable Development, National Observatory of Athens, Greece

M81and M82

W.O FLT 110 4''TMB flattener
SBIG ST10XME

W.O ZS80 ED_ DSI color
Synta EQ6 Pro

Total exposure 245 min LRGB

22x5min Lum 9x5min each color

Kallithea
Athens
Hellas

M81 M82

W.O FLT110 with 4" TMB flattener Sbig ST10XME

22x5min

Jupiter Great Red Spot and GRSjr rework

Back to 2006....!!!

Meade 8'' LX90 Televue Powermate x2.5 ToUcam ProII

IC 405 Ha

W.O FLT110
SBIG ST10XME
Astrodon Ha 5nm
EQ6 PRO

8x10min

IC434 The Horsehead Nebula

W. O FLT110
SBIG ST10 XME
15X5MIN Ha

NGC6888 Full

The Flaming Star Nebula - IC 405 Full resolution

Ha (Ha+R)GB
Ha:80'(8x10') R:50'(10x5') G:50'(10x5') B:75'(15x5')
total exposure 255min

FLT110 ST10XME-CFW9 EQ6Pro
Astrodon Filters

NGC 891

FLT110 Sbig ST10XME

Lum (20x5min) 100min
RGB (7x5min) 35:35:35

NGC7331 and Stephan’s Quintet

FLT110 - Sbig ST10XME - EQ6Pro

Lum (18x5min+7x10min) 160min
RGB (8x5min) 40:40:40
Total exposure time 280min

IC1795

FLT110 - SBIG ST10XME - Ha 5nm Astrodon - EQ6Pro

M13

FLT110 SBIG ST10-XME

RGB 30:30:30

NGC 281

W.0 FLT110 - EQ6Pro EQMod - ST10XME

W.O ZS80 - DSI - GPUSB - PHD Guiding

100min (10x10min) Ha 5nm Astrodon

NGC 6888 Crescent Nebula

W.0 FLT110 - EQ6Pro EQMod - ST10XME

W.O ZS80 - DSI - GPUSB - PHD Guiding

150min (15x10min) Ha


Kallithea
Athens
Hellas
3/8/2008