CN FORUMS ARCHIVE Telescope Reviews: colourful spectra via Canon Rebel + static 4" SCT

CLOUDY NIGHTS FORUM ARCHIVES
"Live Forums" can be found here: Live Forums

ARCHIVE

· Login · Main Index · Search

Astrophotography and Sketching >> DSLR & Digital Camera Astro Imaging & Processing

Pages: 1

nytecam
Postmaster

Reged: 08/20/05
Posts: 9841
Loc: London UK

colourful spectra via Canon Rebel + static 4" SCT
#1127692 - 09/02/06 06:24 AM Attachment (135 downloads)

..this spectrum of Vega taken with a Rainbow Optics grating in a 1-1/4" nosepiece on my Canon Rebel coupled to a friend's classic Meade 4" SCT. No drive used - the star and its spectrum allowed to trail in 20 sec exposure. It fairly shows the colour range of the Canon CMOS chip for no enhancement of either colour or contrast used

Note the effect of Vega, near zenith at the time, twinkling as horizontal lines and slight deformation of vertical [hydrogen ] lines

I'll post more stars taken during the session soon. Hope it's of interest

Attachment

--------------------
Nytecam 51N 0.1W
Meade 30cm LX200+C8+Ha+CaK PSTs+spectrographs
SX M9+Lodestar-C CCDs/Canon 300D DSLR
My Meade astrograph-colour deepsky
My supernova discovery
My dome build/spectroscopes/DSO images/Lodestar colour images & videos

Post Extras:

Print Post

Remind Me!

Notify Moderator

nytecam
Postmaster

Reged: 08/20/05
Posts: 9841
Loc: London UK

Re: colourful spectra via Canon Rebel + static 4" new

new

[Re: nytecam]
#1127798 - 09/02/06 09:07 AM Attachment (93 downloads)

..more with alpha Oph, Her and Boo respectively

Attachment

--------------------
Nytecam 51N 0.1W
Meade 30cm LX200+C8+Ha+CaK PSTs+spectrographs
SX M9+Lodestar-C CCDs/Canon 300D DSLR
My Meade astrograph-colour deepsky
My supernova discovery
My dome build/spectroscopes/DSO images/Lodestar colour images & videos

Post Extras:

Print Post

Remind Me!

Notify Moderator

nytecam
Postmaster

Reged: 08/20/05
Posts: 9841
Loc: London UK

Re: colourful spectra via Canon Rebel + static 4" new

new

[Re: nytecam]
#1127802 - 09/02/06 09:08 AM Attachment (90 downloads)

..and finally orange/red stars epsilon + beta Peg in east

Attachment

--------------------
Nytecam 51N 0.1W
Meade 30cm LX200+C8+Ha+CaK PSTs+spectrographs
SX M9+Lodestar-C CCDs/Canon 300D DSLR
My Meade astrograph-colour deepsky
My supernova discovery
My dome build/spectroscopes/DSO images/Lodestar colour images & videos

Post Extras:

Print Post

Remind Me!

Notify Moderator

Dave M
Postmaster

Reged: 08/03/04
Posts: 6207
Loc: N.E.Ohio

Re: colourful spectra via Canon Rebel + static 4" new

new

[Re: nytecam]
#1127893 - 09/02/06 10:45 AM

That is cool!..Very interesting.

--------------------
Dave
Unitron 131-C
Meade 16" F4.5 EQ Starfinder
1976 Celestron Pacific C5
Celestron C90-Astro
Tak FSQ106ED
Astro-Physics 900-GTO
Masuyama`s 35mm, 30mm, 25mm-Wide, 20mm, 10mm

Post Extras:

Print Post

Remind Me!

Notify Moderator

Tonk
Postmaster

Reged: 08/19/04
Posts: 6100
Loc: Leeds, UK, 54N

Re: colourful spectra via Canon Rebel + static 4" new

new

[Re: Dave M]
#1128003 - 09/02/06 12:00 PM

Yes this is very interesting to me. Do you have more info on equipment, techniques and useful projects. I'm looking for worthwhile stuff to do from my home location which isn't great for quality astro photography and spectroscopy has always interested me (I was once a research chemist)

--------------------
Televue 85/TRF-2008 field flattener, Meade LX200 10", Manfrotto 055SSB tripod/410 geared head/AstroTrac TT320X-AG/056 3D head, GM-8/Gemini, 10 Micron 1000 HPS, Canon 40D (unmodded), Canon 450D (modded w/Astronomiks clip-ins - UV/IR, OWB), Coronado SM60/Lunt B1200/WO diagonal, Baader Herschel Wedge
Leeds Sky Clock Ripon Sky Clock

Post Extras:

Print Post

Remind Me!

Notify Moderator

nytecam
Postmaster

Reged: 08/20/05
Posts: 9841
Loc: London UK

Re: colourful spectra via Canon Rebel + static 4" new

new

[Re: Tonk]
#1129098 - 09/03/06 04:58 AM Attachment (60 downloads)

Quote:

Yes this is very interesting to me. Do you have more info on equipment, techniques and useful projects. I'm looking for worthwhile stuff to do from my home location which isn't great for quality astro photography and spectroscopy has always interested me (I was once a research chemist)

Thanks Tonk – I’ve been doing spectro for over three decades initially with film [Vega sample below from 1980!] and pioneered CCD use from early 1990s culminating in my powerful homebuilt Littrow WPO spectrograph.in the late ‘90s.
My homepage is loaded with spectro stuff . My main spectro homepage contains many observing projects including solar, asteroid, all planets [Merc- Pluto], variable stars, Wolf-Rayet stars, quasar red-shifts etc

Here’s some of my equipment project links covering prisms and gratings - both transmission and reflective types…..

beginner
spectro for beginners
simple spectra via CD/DVD
simple digicam spectra - grism
simple digicam spectra – prism
simple prism spectra via Canon Rebel
drift spectra via Canon Rebel
deepsky filter tester
cereal-box spectroscope
spectra via chromatic aberration
BAA spectro letter

advanced
WPO Mk I spectrograph
WPO Littrow spectrograph
faint object lo-res Littrow spectrograph
Littrow prism spectrograph
lo-res-lunar spectrograph
hi-res solar Ebert spectrograph
split field spectrograph for SNe

commercial spectrographs
SBIG SGS spectrograph review + mods
Rainbow Optics grating review
Sivo spectrograph review

Yahoo groups
StarAnalyser
amateur astro spectroscopy

Thanks for asking!

Attachment

Attachment

--------------------
Nytecam 51N 0.1W
Meade 30cm LX200+C8+Ha+CaK PSTs+spectrographs
SX M9+Lodestar-C CCDs/Canon 300D DSLR
My Meade astrograph-colour deepsky
My supernova discovery
My dome build/spectroscopes/DSO images/Lodestar colour images & videos

Post Extras:

Print Post

Remind Me!

Notify Moderator

Tonk
Postmaster

Reged: 08/19/04
Posts: 6100
Loc: Leeds, UK, 54N

Re: colourful spectra via Canon Rebel + static 4" new

new

[Re: nytecam]
#1129128 - 09/03/06 05:46 AM

Oh boy -

I'll bookmark this

. Thanks for the info

--------------------
Televue 85/TRF-2008 field flattener, Meade LX200 10", Manfrotto 055SSB tripod/410 geared head/AstroTrac TT320X-AG/056 3D head, GM-8/Gemini, 10 Micron 1000 HPS, Canon 40D (unmodded), Canon 450D (modded w/Astronomiks clip-ins - UV/IR, OWB), Coronado SM60/Lunt B1200/WO diagonal, Baader Herschel Wedge
Leeds Sky Clock Ripon Sky Clock

Post Extras:

Print Post

Remind Me!

Notify Moderator

Mr. Mac
super member

Reged: 09/26/05
Posts: 146
Loc: Henrico Co., Va.

Re: colourful spectra via Canon Rebel + static 4" new

new

[Re: Tonk]
#1132379 - 09/04/06 11:05 PM

Thanks for your post and sharing your links and website!!! This is supremely interesting....In pursuit of scientific research I'm going down to the pantry to find a cereal box and a seldom used cd....
thanks again for sharing your posts!!!

--------------------
Mac

8" Lx200GPS
WO Megrez 80FD
WO Binos
Canon Rebel XT
Unbridled enthusiasm

Post Extras:

Print Post

Remind Me!

Notify Moderator

Michael Miles
professor emeritus

Reged: 02/11/05
Posts: 730

Re: colourful spectra via Canon Rebel + static 4" new

new

[Re: nytecam]
#1143288 - 09/11/06 04:44 PM

Hi Maurice:

Thanks for your post and links. I've wanted to dip into spectroscopy since I was a teenager, but haven't wanted to invest the time or money.

However, your links led to an option of using a Cokin #45 diffraction filter which requires little time and money. I've tracked one down on ebay, and have jury-rigged it onto my Canon 300D, so I'm hoping to try it soon.

I'll post if I get it to work. I tried it with just my camera lens, but it only worked on the moon. I'm hoping that the extra light gathering of my 8" Newt will work on at least the brighter stars.

Hopefully more soon,

Michael

--------------------
LXD-75 w/
Stellarvue 102ED
Hardin 10" Newt
Antares 8" Newt
Meade AR-5
Meade N-6
Celestron 102mm refractor
Canon 300D, Meade DSI guiding

Post Extras:

Print Post

Remind Me!

Notify Moderator

Michael Miles
professor emeritus

Reged: 02/11/05
Posts: 730

Re: colourful spectra via Canon Rebel + static 4" new

new

[Re: Michael Miles]
#1144004 - 09/12/06 12:48 AM Attachment (73 downloads)

WOO HOO! It works!

At least in principle. I'm including a single frame (time limited right now).

Vega - 15 sec at ASA800.

Hopefully more soon,

Michael

Attachment

Attachment

--------------------
LXD-75 w/
Stellarvue 102ED
Hardin 10" Newt
Antares 8" Newt
Meade AR-5
Meade N-6
Celestron 102mm refractor
Canon 300D, Meade DSI guiding

Post Extras:

Print Post

Remind Me!

Notify Moderator

Psion
professor emeritus

Reged: 04/27/05
Posts: 706
Loc: Czech Republic, Prague

Re: colourful spectra via Canon Rebel + static 4" new

new

[Re: Michael Miles]
#1144584 - 09/12/06 11:51 AM

I bought a SBIG DSS-7 two months ago and this is very nice equipment.
http://www.sbig.com/dss7/dss7.htm

I have made a spectra of Vega with a telescope Meade LX200R 8" and the DSS-7. This is my calibrated spectra with a Planck curve (14000 K) :

--------------------
Newton 200/800, 200/1200, 100/1000
Sky-Watcher ED80 + mount CG5 GT
PENTAX 75 SDHF, TEC 140-2011
Mount Celestron CGE
Meade LX200R 8" OTA
EOS 300Da, SBIG ST-402ME, SBIG ST-2000XM
Spectrograph SBIG DSS-7, LHIRES III
Mintron 12V1C-EX modif (amp off)
http://astroview.psionfired.com

Post Extras:

Print Post

Remind Me!

Notify Moderator

nytecam
Postmaster

Reged: 08/20/05
Posts: 9841
Loc: London UK

Re: colourful spectra via Canon Rebel + static 4" new

new

[Re: Michael Miles]
#1273191 - 11/28/06 12:04 PM

Quote:

WOO HOO! It works! At least in principle. I'm including a single frame (time limited right now). Vega - 15 sec at ASA800. Hopefully more soon, Michael

Hi Michael - sorry for delay - haven't looked at this posting for a while

Excellent result - there's lots of info in there including maybe an M type star centre right

--------------------
Nytecam 51N 0.1W
Meade 30cm LX200+C8+Ha+CaK PSTs+spectrographs
SX M9+Lodestar-C CCDs/Canon 300D DSLR
My Meade astrograph-colour deepsky
My supernova discovery
My dome build/spectroscopes/DSO images/Lodestar colour images & videos

Post Extras:

Print Post

Remind Me!

Notify Moderator

nytecam
Postmaster

Reged: 08/20/05
Posts: 9841
Loc: London UK

Re: colourful spectra via Canon Rebel + static 4" new

new

[Re: nytecam]
#1291579 - 12/08/06 06:38 AM

Quote:

Quote:

WOO HOO! It works! At least in principle. I'm including a single frame (time limited right now). Vega - 15 sec at ASA800. Hopefully more soon, Michael

Hi Michael - sorry for delay - haven't looked at this posting for a while Excellent result - there's lots of info in there including maybe an M type star centre right

...which I find is variable XY Lyrae north of Vega - the VS exposure is spot-on eg not saturated. As Robin says the Rainbow and Staranalyser gratings are more efficient but that Cokin grating filter a great buy

--------------------
Nytecam 51N 0.1W
Meade 30cm LX200+C8+Ha+CaK PSTs+spectrographs
SX M9+Lodestar-C CCDs/Canon 300D DSLR
My Meade astrograph-colour deepsky
My supernova discovery
My dome build/spectroscopes/DSO images/Lodestar colour images & videos

Post Extras:

Print Post

Remind Me!

Notify Moderator

Pages: 1

Extra information

0 registered and 24 anonymous users are browsing this forum.

Moderator: Charlie Hein, knuklhdastnmr

Print Thread

Forum Permissions
      You cannot start new topics
      You cannot reply to topics
      HTML is disabled
      UBBCode is enabled

Thread views: 1570

Jump to

Cloudy Nights Sponsor: Astronomics