How to make narrowband filter deep sky images with a DSLR and clip filter for astrophotography

[jakob3400]

Waoo. , Nice

[santa3fe]

Wow this cuts several hours of reading into less than ten minutes! Question: What are IR cutoff filters for and are these useful with dslr cameras?

[MarkHellweg]

@santa3fe

To take away or change the standard IR filter makes sense to get more RED intensity. But this has not really someting to do with narrowband imaging. These narrowband filter are different and only let through a narrow wave length...

[torolof]

PLEASE can someone tell me the name of this SONG? MUSIC? TUNE?

thank you very much!

[MarkHellweg]

@torolof

This song was composed for my video by a friend of mine...

[torolof]

@MarkHellweg doers your friend have an album? or this music to share?

or the name ?

[eCicerone]

@torolof

In the end of the video: Music by Thorsten Rummler

[Blizzstyle4321]

How do you change the filters while you are tracking? There would be a camera shake, wouldn it?

[MarkHellweg]

@Blizzstyle4321

yeah this is not the best solution because - yes - you have to unlock the camera to change these filters. But the M 42-bayonet nearly has the same alignment after the changing process. After all you can handle different angles by software processing.

[Blizzstyle4321]

@MarkHellweg Ah, ok. Thank you!

[jack342able]

@flowerpotproductions Answer: Actually you Cant see Dark nebula directly with your eyes but you Can do a trick to see it called adverted vision by looking mor directly at the nebula but a little side at the Dark Black space but still concentrate at the nebula. The naked eyes limit is 8 magnitude in a Dark sky class 1 sky with a telescope

[flowerpotproductions]

Question: when your viewing these deep sky objects like nebulae and galaxies, will you see the clouds in them? Or is this only when you take the pictures? When I view the Orion nebula, i can see the clouds of gas in it but when i view something fainter like the dumbbell nebula i cant see the clouds.. is this normal? Also can you attach eyepieces and filters when doing astrophotography or is it only through the camera with no additional help (like how eyepieces can make you see closer up)

[MarkHellweg]

@flowerpotproductions @jack342able An object like the orion nebula is nearly unique. You need a mighty telescope (like 20 inch or higher) to see much more details also in other objects. The camera has benefits here because the sensor is collecting the photons for a longer time. Some planetary nebulae can be viewed best with an [OIII] filter. And there are so called deep sky filter or contrast booster available. But I don't have much experience there...

[vwlover94]

Most beautiful thing I've seen yet :) thanks for this video ,what telescope do you recomend for pictures like these? Dobsian ,reflector,refactor,schmidt cassegrain,or maklov?

[MarkHellweg]

@vwlover94 most of these images are made with a APO refractor of Takahashi / Japan and a Canon 20Da dSLR.

Many thanks for your nice comment by the way

[voron27]

thank very much for this video. now i see the difference in using these filters..right now i am looking for them at local store. but just one question - how H-beta is different from H-alpha?. is there a big difference cause i can`t find halpha here only hbeta

[bymacorg]

Cool!

what kind of trigger do you use?

Do you know you can use a wireless remote for repeat long exposures in astro photography? check it out at: astrus.bymac.org

Works with all major brands os cameras!

[VPolecat]

Thank you Mark, that is some great work, thanks for sharing!

One question though, how does the collecting of different wavelengths correlate with observing different types of matter? I know the info should be out there and I'll look for it but I would like to know your personal opinion as well.

Cheers

[arvakur]

hey man I really have some questions, how to use a h-alpha... I have an D90 bought a H-ALPHA for it, and every thing looks red... what else do I need? please help!



[MarkHellweg]

The red is correct. The H-alpha wavelenth is deep red. That is the reason why simple h-alpha shots are alway displayed in b/w. If you want to get a three color image showing the h-alpha data, you'll need to take two more exposure series to complete the THREE color RGB image. For example you can make also series with a h-beta, and [OIII] or even [SII]. Than you can combine a mapped color RGB image. Another method is to take also GREEN and BLUE channels. Than you can combine h-alpha to R cannel.

[NigelLX200]

what software do you use to combine the image

[MarkHellweg]

@NigelLX200

The Software is called ImagesPlus made by Mike Unsold (USA)

[DontMessWithToxins]

stellar. really.  nice job.

[UfoYes]

Great vid. Thank you.

[yoda6677]

verry good information...

[TheSpace2001]

Ha 656.3 mm

Blue approx. 450 mm

Green 553.15mm

You Guys know this first.

[Dewclaws]

Thank you for taking the time to go though this, are you a speaker at the AIC?

[mamolian]

Beautiful work! Inspires me to eventually purchase equipment capable of producing images such as these! :)

[Djennings16]

Mark, awesome photos and thank you for showing the difference between standard RGB and Narrowband processing. Just AWESOME~

[Titankilla1982]

dude i just looked up some of your set up.. man your loaded lol that 4 inch alone is like £2k. i love the pics and im trying to get in to the hobby myself. sadly its trauling through ebay trying to find bargins on equptment for me. picked up a canon 40d the other week for £290.. right now im looking to get a 150mm refractor on an eq5 mount by christmas. with luck ill have enough to get a piggy back refractor for photography later next year.

[TheSpace2001]

@Titankilla1982 I had EOS 7d with 15-85 and 70-200 f/2.8L IS II USM and a soild tripod.Trying to get in the hobby and may get 12" f/4 OTA during summer 2011, will luck father buy iPod starbook.

[mandochiko]

Thank you very much for sharing.