nytecam
Postmaster
Reged: 08/20/05
Posts: 5750
Loc: London UK
|
|
At last a clear and cold night [if poor transparency] to traps some photons concluding with this full frame shot of the gibbous moon rising in the east which shows the sky coverage via the ETX-70 with homemage focal reducer and the massively sized Comet Holmes next to Algol. More asteroids, clusters and nebula to follow 
Additional notes
For the 3 hour session I shot the pics in reduced camera resolution eg 2x2 pixel binning which increased the camera 'speed' 4-fold to keep exposures short - in the hazy conditions exposures >90sec completely saturated the camera! The longest combined exposure was for inordinately faint Comet Holmes [below] close to the zenith in 5 min exposure [5 x 60sec exposures co-added] and the briefest the moon at 1/1000sec - even that was grossly overexposed so I had to partially obstruction the 70mm OG to get the right exposure  All the shots via my ETX-70 OTA piggybacked on my Meade SCT and each target located via the LX200 goto. I used my homemade focal reducer that doubles the sky coverage to 2 deg wide fov [see how 'small' the moon is!] that 'speeds' the f/5 OG to ~f/3.7
--------------------
Nytecam 51N 0.1W
Meade 30cm LX200+ETX-70+e-finder+C8+Ha+CaK PSTs SBIG SGS+homebuilt spectrographs
Starlight SXVF_M9+Lodestar CCDs/Canon 300D DSLR/Fuji E550
My observatory build-ETX-70 imaging-my videos
Edited by nytecam (01/25/08 03:35 AM)
|
David Castillo
scholastic sledgehammer
Reged: 09/09/06
Posts: 882
Loc: Carmel Valley, Ca
|
|
Keep 'em coming, Nytcam 
-------
Dave
|
Veridian
sage
Reged: 07/17/06
Posts: 478
|
|
Ohhh sooo nice!
Mark J.D.
|
nytecam
Postmaster
Reged: 08/20/05
Posts: 5750
Loc: London UK
|
|
Thanks David and Mark Here's the same Holmes pic but rescaled ~50% larger - it still holds up quite well with stars down to ~mag 14/15 - not bad for a little scope
|
nytecam
Postmaster
Reged: 08/20/05
Posts: 5750
Loc: London UK
|
|
Here's M42 in 5sec and 30sec exposures
|
nytecam
Postmaster
Reged: 08/20/05
Posts: 5750
Loc: London UK
|
|
compare to brilliant M42 [above] fair result on Pleiades M45 and less so on the Horsehead B33 but it's there - just
|
nytecam
Postmaster
Reged: 08/20/05
Posts: 5750
Loc: London UK
|
|
three fairly obscure open clusters in Taurus and Monoceros [mid pic] rspectively - cropped from 50% enlarged full frames Click attachment for full view
|
nytecam
Postmaster
Reged: 08/20/05
Posts: 5750
Loc: London UK
|
|
here's the first and easy bright asteroids Ceres [MP1 in Cetus] and Eunomia [MP15 in Gemini] each about mag 8.5 that should be visible in bins
|
seeker372011
scholastic sledgehammer
Reged: 03/05/04
Posts: 916
Loc: Sydney , Australia
|
|
as always, inspirational
--------------------
ED 80 on a CG5 mount;ED 127 on EQ6; QHY8, 20 x 80 LW Obies;PST;10 inch GSO dob
|
timlilley
member
Reged: 01/06/08
Posts: 21
Loc: Northeast Georgia, USA
|
|
Thanks so much for sharing your photos. I hope to get more involved in astrophotography moving forward, and your images show me what is possible with the optics I already own. I wish you the clearest of skies and the best of seeing, albeit selfishly because I look forward to your next set of photos! 
--------------------
Clear Skies, Tim
Celestron C4R
William Optics ZS66
Meade ETX 80BB
Celestron/Vixen Cometron 60mm
Hyperion Zoom and 5mm
Celestron & Meade Plossls
Nikon D80 for imaging
Viewing conditions here:
|
DNTash
scholastic sledgehammer
Reged: 09/02/07
Posts: 762
Loc: India
|
|
Impressive as always, nytecam. Good to see you're getting the occasional clear night.
--------------------
AT 72
TMB 92
Orion 120ST
|
nytecam
Postmaster
Reged: 08/20/05
Posts: 5750
Loc: London UK
|
|
Thanks Seeker, Tim and Dale for your interest Here's a couple of fields in Pisces that hopefully contain mag 12.8 asteroids eg MP10 Hygiea and MP12 Victoria respectively and must await another shot to see 'what moves'
|
nytecam
Postmaster
Reged: 08/20/05
Posts: 5750
Loc: London UK
|
|
Here's MP349 Dembowska in Taurus last night Jan 24 and Jan 21 [on left] shows its movement
|
nytecam
Postmaster
Reged: 08/20/05
Posts: 5750
Loc: London UK
|
|
and finally MP26 Proserpina in Gemini at mag 11.3 - to be located
|
Joe Lalumia
Post Laureate
Reged: 01/24/07
Posts: 3606
Loc: Rockwall, Texas, USA
|
|
Great pics Nytecam! --- thanks for posting them.
Joe
--------------------
LX90 8" LNT, SV Nighthawk & TelePOD, SV 80/9D & M4 mount, ETX 90, Orion XT10i, 20x80 binoculars, SV-BV3s-- www.texasastro.org
"Great minds discuss ideas;Average minds discuss events;Small minds discuss people." Unknown
|
Veridian
sage
Reged: 07/17/06
Posts: 478
|
|
Quote:
compare to brilliant M42 [above] fair result on Pleiades M45 and less so on the Horsehead B33 but it's there - just
NyteCam,
I see it there alright!
This is just killing me,, that someone can capture 'The Horsehead' with a 70mm scope.
Very nice indeed!
Mark J.D.
|
nytecam
Postmaster
Reged: 08/20/05
Posts: 5750
Loc: London UK
|
|
Quote:
NyteCam,I see it there alright! This is just killing me,, that someone can capture 'The Horsehead' with a 70mm scope.Very nice indeed! Mark J.D.
Thanks Mark - the skies were getting hazy by the time I got to image the HH and I was greedy to try so much but it had been a long time since the last clear night..... here's the HH taken on a better night through the '70' OG
--------------------
Nytecam 51N 0.1W
Meade 30cm LX200+ETX-70+e-finder+C8+Ha+CaK PSTs SBIG SGS+homebuilt spectrographs
Starlight SXVF_M9+Lodestar CCDs/Canon 300D DSLR/Fuji E550
My observatory build-ETX-70 imaging-my videos
|
N7XW
sage
Reged: 05/04/07
Posts: 354
Loc: Westport, WA
|
|
Great as usual! Thanks for sharing!
--------------------
N7XW
ETX125pe with UHTC
4.5" Reflector
60mm Refractor
Philips SPC900NC
Zhumell eyepieces & filters
3 sets of good ol' binocs
"Don't worry about what telescope you own, or its quality. Just get out under the night sky, and enjoy God's wondrous universe."
- Thomas M. Back, from a November 2006 interview with CN
Rest In Peace, Thomas
|
nytecam
Postmaster
Reged: 08/20/05
Posts: 5750
Loc: London UK
|
|
Thanks Jon I'm posting this field spectrum of M42 here ['cos taken with ETX!] as there's no natural place for it on CN
It's essentially identical to my earlier M42 shots but I've screwed-in a Rainbow Optics transmission grating immediately before the CCD sensor to split the light into different wavelengths - each star comes out as a point followed by a thin line [blue to left - red/IR to right] whilst the Orion Neb glows at specific wavelengths eg hydrogen beta+doubly ionised oxygen [Hb+OIII] in green-blue and hydrogen-alpha [Ha] in red
The nebula glows via radiation from the very hot blue/violet stars embedded within it and for these stars the simple ETX-70 2-element lens struggles to bring to a common focus - hence the fuzzball to the left of each star's blue spectrum Hope result is enlightening
--------------------
Nytecam 51N 0.1W
Meade 30cm LX200+ETX-70+e-finder+C8+Ha+CaK PSTs SBIG SGS+homebuilt spectrographs
Starlight SXVF_M9+Lodestar CCDs/Canon 300D DSLR/Fuji E550
My observatory build-ETX-70 imaging-my videos
|
nytecam
Postmaster
Reged: 08/20/05
Posts: 5750
Loc: London UK
|
|
Here's the confirmatory dual images of MP10 Hygiea and MP12 Victoria, both in Pisces, from Jan 24/27 - each asteroid spotted by placing the two images side-by-side and using the cross-eyed technique to fuse the two starfields into a single image - the asteroid being a 'lone-rider' within the frame and circled here.
|
Previous
Index
Next
Threaded
Edit
Reply
Quote
[Re: 