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Forum: Post Your Photos! 11-12-2017, 09:35 AM  
Nature Jewels - Nebulas in Orion Constellation with Pentax-M 200/F4 from 1982
Posted By Pete_XL
Replies: 26
Views: 2,289

Nebulas in Orion Constellation by pete_xl, auf Flickr
Orion, Running Man, Horsehead & Flame Nebulas in the Orion Constelllation (M42, M43, IC 434, NGC 2024).
21 x 180 s ISO 400, unmodified Pentax K3ii, Pentax-M 200 mm (from 1982) @ F5.6
Processed with DSS and PS 2018CC
Forum: Post Your Photos! 04-15-2018, 07:22 AM  
Nature Nightwash -The Whirlpool - Messier 51
Posted By Pete_XL
Replies: 18
Views: 980
This is the "Whirlpool Galaxy" M51 shot from my balcony with a Pentax K3ii. The image was buit from 60 x 300s exposure @ ISO 400.


M51 is about 30 million lightyears away from us. The galaxy is interacting with a smaller one that is passing behind it.


M51 - Whirlpool Galaxy (crop) by pete_xl, auf Flickr
Forum: Post Your Photos! 11-19-2017, 07:43 AM  
Night BlueTorch - Horsehead & Flame Nebula 2017
Posted By Pete_XL
Replies: 21
Views: 1,300
Blue Torch - Horse & Flame 2017 by pete_xl, auf Flickr
The Blue Torch is the giant star Alnitak that shines bright between the Flame Nebula and the Horsehead Nebula.
NGC 2024, B33, IC431, IC 432, IC 434, IC 435, NGC 2023,
50 x 180s @ ISO400
Pentax K3 II + TS Triplet APO 80/480 3" Flattener
Forum: Post Your Photos! 12-19-2015, 11:10 AM  
Night Orion Nebula M42 and Running Man Nebula with Pentax K3 II
Posted By Pete_XL
Replies: 19
Views: 2,189
M42 by pete_xl, auf Flickr
Orion Nebula M42 and Running Man Nebula NGC 1977
123x30s, F1:6.3, ISO 1600
Processing with DeepSkyStacker, Lightroom, Photoshop
Forum: Post Your Photos! 02-02-2020, 11:23 AM  
Nature Jewels - Nebulas in Orion Constellation with Pentax-M 200/F4 from 1982
Posted By Pete_XL
Replies: 26
Views: 2,289
So I did my best to reprocess the old data with new sotware and more "experience". The stars are more and the field is deeper. But I am not sure if the DSOs are really better now.:confused:

Orion-Region by pete_xl, auf Flickr
Forum: Post Your Photos! 03-01-2020, 10:51 AM  
Night The Leo Triplet of Galaxies
Posted By Pete_XL
Replies: 6
Views: 338
The so called Leo Triplet in the constellation Leo consists of the galaxies NGC 3628 (left, also called Hamburger Galaxy), NGC 3627 (lower right) and NGC 3623 (upper right). The camera was a stock Pentax K3II attached to a TS 130/910 mm apo telescope.

The Leo Triplet (2020 version) by pete_xl, auf Flickr

The full resolution with technical data can be inspected here: The Leo Triplet (2020 Pentax Version) ( pete_xl ) - AstroBin.

Cheers
Pete
Forum: Post Your Photos! 12-20-2015, 02:13 AM  
Night Orion Nebula M42 and Running Man Nebula with Pentax K3 II
Posted By Pete_XL
Replies: 19
Views: 2,189
Now that I know what "LBA" is I must say that I could resist up to now:D. I started doing astrophotos because I wanted to find out how far I could get with "normal" DSLR and lens equipment. That was 14 month and 20 starry nights ago. I have bought old prime lenses for small money in the internet meanwhile.

My actual pictures are shot with a 400 mm lens from the 1980ies, not with an 8" Newtonien Telecope;)

---------- Post added 12-20-15 at 10:14 ----------


Thank you for the info. LBA tries to grab me always around Christmas....:D

---------- Post added 12-20-15 at 10:27 ----------


You are right: 123 pics (best out of 190 or so) shot from my balcony.But it is not trial and error. It is catching as many photons as possible at the lowest possible ISO without exceeding the exposure time so long that you get trailing stars. Stacking the series brings down the noise and increases dynamic range. I shoot series of as many pics as possible using a remote timer control in bulb mode. There is actually a discussion in the Astrophotograpy group on this topic.
https://www.pentaxforums.com/forums/groups/135-astrophotography/4340-how-avoi...high-isos.html
Forum: Monthly Photo Contests 12-26-2019, 09:44 AM  
The Grid
Posted By Pete_XL
Replies: 38
Views: 534


Tiny droplets in a spider's web that hung beneath a guard rail form a grid of little landscape-planets.
Forum: Post Your Photos! 05-02-2017, 01:30 PM  
Nature Wings I
Posted By Pete_XL
Replies: 7
Views: 657
My first experiments with flying birds in time.....

Wings I by pete_xl, auf Flickr
Forum: Post Your Photos! 12-20-2016, 01:46 AM  
Abstract Surface Tension - The Net
Posted By Pete_XL
Replies: 16
Views: 971
The Grid by pete_xl, auf Flickr
Forum: Post Your Photos! 12-11-2019, 11:43 PM  
Nature Surface Tension - Arcs
Posted By Pete_XL
Replies: 7
Views: 540
...you may look here for the bug...Drowned | pete_xl | Flickr
Forum: Monthly Photo Contests 10-19-2019, 05:52 AM  
From Blue Horsehead and Rho Ophiuchi to Jupiter and the Milky Way with Astrotracer
Posted By Pete_XL
Replies: 12
Views: 330

From the Blue Horsehead and Rho Ophiuchi to Jupiter and the Milky Way
by pete_xl, auf Flickr

With Pentax alone under the night sky....

The colorful Rho Ophiuchi cloud complex near the yellow star Antares is one of the most beautiful regions in the night sky for me. The image shows the Blue Horsehead Nebula (upper right), the Rho Ophiuchi region (middle right), the bright planet Jupiter and part of the Milky way on the left side of the image.

I shot this image on a green field on the island Naxos (Greece) with just the built in Astrotracer function of my Pentax K3ii. The camera was set on a normal travelling tripod. 67 half minute exposures were combined for the final image.
Forum: Pentax K-5 03-26-2019, 09:20 AM  
K-5 For Astrophotography
Posted By Pete_XL
Replies: 1,105
Views: 301,264
This is a really nice and scenic image with the Seven Sisters perfectly captured! Concerning the trails you might want to stick to the "Rule of 500" to avoid them. The exposure time should be shorter than tmax = 500/(fl x crop-factor). So with your 18 mm lens and the K5 it definitively should be shorter than 500/(18 x 1,5) = 18.5 s. I tend to use a "Rule of 400" instead to have a safety buffer.
Forum: Post Your Photos! 10-16-2018, 02:16 AM  
Nature Astrotracer and the Alps
Posted By Pete_XL
Replies: 14
Views: 704
Hiking in the Austrian Alps I used the Astrotracer function of the K3ii for an image with the Heart-of-Jesus Chapel and the Milky Way above the Mottakopf mountain in a little village named Brand. The final image consists of 20 x 60 s with the Astrotracer for the stars and 8 x 30 s for the foreground. The stars were stacked with the freeware Sequator (great! program) and the composite was arranged and postprocessed in Photoshop CC2018.


Chapel "Heart of Jesus" in Brand (Austria) under the Milkyway by pete_xl, auf Flickr
Forum: Post Your Photos! 08-10-2018, 08:06 AM  
Nature Nightwash -The Whirlpool - Messier 51
Posted By Pete_XL
Replies: 18
Views: 980
Thank you very much! :)


@aitrus3, I have another favourite I fell in love with:

Andromeda Galaxie | Pentax K 3 II + TS APO 80/480, 75 x 180 ? | Flickr

Andromeda Galaxie (Crop) | Pentax K 3 II + TS APO 80/480, 75? | Flickr


This grand old lady galaxy target was my starter with Astrotracer in Oktober 2014.....
Forum: Post Your Photos! 10-05-2018, 12:26 AM  
Nature The Melotte 15 Complex
Posted By Pete_XL
Replies: 10
Views: 657
Melotte 15 is a cluster of young stars in the mid of the cloud complex IC1805 - the Heart Nebula - in the constellation Cassiopeia.


The image is a combination of 56 x 600s @ ISO 800 with 12 nm Hydrogen Alpha narrowband filter and an RGB image. The Ha data were shot through a 130/910mm refractor with a stock Pentax K3ii. The RGB data were taken with a 80/480 mm refractor and a stock Pentax K5 (48 x 180s @ ISO 800).


Processing in Astro Pixel Processor and Photoshop CC2018



full resolution: Melotte 15 (Ha-RGB) by pete_xl, auf Flickr
Forum: Post Your Photos! 11-01-2017, 02:31 PM  
Nature Take a rest.....!
Posted By Pete_XL
Replies: 4
Views: 557
Chronophoto of Graylag Geese landing on a rest place during their flight to their winter quarters in the waste water farm of the city of Muenster in Germany.


Grey Geese-2-Edit.jpg by pete_xl, auf Flickr
Forum: Monthly Photo Contests 08-08-2019, 08:27 AM  
Prey
Posted By Pete_XL
Replies: 12
Views: 287

Prey!
by pete_xl, auf Flickr

Chronophoto of seagulls circulating above a sunbathing women at the beach of Sta. Teresa di Gallura, Sardinia.
Forum: Post Your Photos! 07-21-2019, 02:24 AM  
Nature The "Big One" captured with a K3ii - the Andromeda Galaxy
Posted By Pete_XL
Replies: 8
Views: 617
The Andromeda Galaxy (M31) is 6 times larger than the Moon in the night sky but of course much fainter. This image was made from 56 single exposures of 90s exposure time at F/6.0 with my K3ii and a 480 mm refractor telescope (TS 80/480mm triplet apo).


M31 with M110 and M32
by pete_xl, auf Flickr

Full resolution and more astronomical/technical info about the image can be found here:


The bright blotch below M31 is the galaxy M110. The blotch above M32 is the dwarf galaxy M32.

Hope you like it!
Pete
Forum: Post Your Photos! 12-14-2018, 07:32 AM  
Nature Jewels - Nebulas in Orion Constellation with Pentax-M 200/F4 from 1982
Posted By Pete_XL
Replies: 26
Views: 2,289
Thank you for the flowers :-)


You are right, the K-3ii has the Astrotracer built in. But I use it only for wide field astro images outside. In my experience it provides 10x to 20 x longer exposure times compared to shooting without tracking. This is not enough for longer lenses. For Deep Sky objects and longer lenses I use a guided tracking mount. This image was made with the camera mounted on a Skywatcher AZ-EQ5 mount autoguided with the MGEN guider. Before that I had a Skywatcher Star Adventuer that provided results that might compare to yours from the Vixen Polarie.
Forum: Pentax K-5 01-28-2017, 07:47 AM  
K-5 For Astrophotography
Posted By Pete_XL
Replies: 1,105
Views: 301,264
This is the reflection nebula M78 and its dark dust nebulas in the Orion constellation and in the left Corner a piece of the so called Barnard's Loop that surrounds most of the Orion constellation.

M78 by pete_xl, auf Flickr
The image was stacked from 30 Pictures with the K-5 @ ISO 400, 360s exposure tíme each.

I will give some more explanations later here:It's all in the data - let's dig it out....... - Astrophotography - PentaxForums.com
Forum: Pentax K-5 01-21-2017, 08:18 AM  
K-5 For Astrophotography
Posted By Pete_XL
Replies: 1,105
Views: 301,264
The K5 was out last Thursday night and caught the witch (Witchhead Nebula IC2118) - which definitely looks like it is named ;)
The Witchhead is a reflexion nebula in the Orion constellation lighted by the star Rigel.


Hexenkopf-Nebel IC2118 by pete_xl, auf Flickr

37 x 300s @ ISO 200 with a TS APO Tripet 80/480 mm on an AZ-EQ5
Forum: Post Your Photos! 09-06-2018, 12:39 PM  
Nature Jewels - Nebulas in Orion Constellation with Pentax-M 200/F4 from 1982
Posted By Pete_XL
Replies: 26
Views: 2,289
I fear a short tutorial won‘t help. Depending on the starting point it may be quite a way to get there. I needed about three years to learn to make astroimages that are worth their name. Maybe 60 nights out in the cold. I allready published some tutorials but I am not sure if it helped anybody. There are already others in the internet that are better than all that I could produce.

I started with old pentax primes, the O-GPS1, astrotracer and a base knowledge in Photoshop. For the processing I searched YouTube for tutorials and step by step upgraded techniques and knowledge with refractor - travelling mount - bigger scope - bigger mount - bigger scope - bigger mount. That is where I am now. I fear that if you want to dive into that thing you will have to start in cold water and begin to swim. It helps a lot to be part if a community like our astrophotography group here or the cloudy nights community. And Youtube has a lot of grat tutorials. Just start - do it. The rest will come from alone if you get addicted.

Cheers
Peter
Forum: Post Your Photos! 09-17-2018, 12:31 PM  
Nature The Cygnus Wall
Posted By Pete_XL
Replies: 11
Views: 566
The red emission Nebula called Cygnus Wall is the part of the North America Nebula (NGC7000) that resembles Mexico/Central America. The region is characterized by dark nebulas and dust lanes that give the scenery a dramatic attitude.
The image was made with a standard unmodified Pentax K3ii on a TS 130/910 refractor with 0.79x reducer. The blue/ red colors were generated by separating magenta and red in postprocessing and shifting the magenta more and more to light blue. The now blue colors should represent OII emission regions while the red colors come from Hydrogen alpha emissions.
39 x 300 s exposures @ ISO 200.


The Cygnus Wall in NGC7000 by pete_xl, auf Flickr

Astropixelprocessor and Photoshop CC2018


P.S. PENTAX FOR ASTRO!
Forum: Pentax K-3 09-07-2018, 12:38 AM  
why I won't buy a k3 (Warning: Satire Thread)
Posted By Pete_XL
Replies: 82,349
Views: 3,267,033
No, no, Scotty, thank you for the flowers but all the honour belongs to you this time ;). The processing of this wide field image is excellent!. It shows these fine dark whispy molecular clouds that I know are hard to dig out in a Bortle 4 image with a bit more than 2 hours exposure time. And the stars and colors are also very nice!

And comming to that tutorial question .... I was asked myself today in another thread to maybe do one. I would like to do another tutorial but I had already tried to share some of my ideas and techniques but had to realize that it is hard to do that and that it is questionable if somebody else can profit. Maybe when I have retired :rolleyes:
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