Jupiter and Uranus

So far I'm feeling pretty good with the C8.  I've gotten the collimation to a point where I'm reasonably happy with it.  It's no refractor, but I'm probably spoiled now that I've gotten a taste of the clear stuff (even if it is a little purple-y).  That being said I'm in love with my new flip mirror setup.  It's well worth the money especially now that I've worked out the focus and can get reasonably close before flipping over to the camera.  I'm sure I'll eventually get a guider, but for the time being I'm enjoying the process of learning to image planets without one.  Turns out I only get about 2 min per shot of Jupiter before the planet rotation causes the features to blur.

Jupiter on a loop - I have about 7 decent frames and it's looping

back and forth so you can see some of the details.

Here it is with some levels applied to bump up the contrast.

You can't see the moons now, but the planet looks better.

Uranus - it's small and blue, but you can tell it's a planet.

Harrison's first star party

Harrison showing his star chart to his public

My son Harrison is a cub scout, but even if he wasn't he'd want to participate in a star party (even if just because I'm into it).  Tonight we brought his 70mm scope, I equipped him with a 25mm eyepiece and turned him loose.  We'd practiced aiming at the house and his red dot was sighted in (fairly well) so I told him to show the kids the moon.

We had about 200 - 300 people and at least 100 kids who absolutely had to be in his line.  He talked and showed and was an ambassador of the sky for hours.  He explained to them that the red light would preserve their night vision and showed them how to use star charts and identify the bright stars.  He kept his scope pointed (manually) at the moon and when people said they couldn't see anything he took care of it graciously.

I could not have been prouder of my Junior Astronomer son.  Kids loved talking to him (in their language) and were really excited to have a person their size who was on the staff. :)

First Light (in the daytime) with Solar Filter

Here's my first attempt at using a Solar Filter.  I purchased a glass one from Orion and even though it's really a snug fit I'm not worried that it'll fall off.

First Light - Celestron C8 OTA

We went to Dallas and I had the pleasure of visiting my first telescope shop - The Observatory.  I had the opportunity to talk to the manager and get some tips on my next scope.  He advised me that I could go up to a C8 with my mount (CG5) and still do photography.

So... my next stop was to check retail ($1200 - ouch) and start trolling the classifieds (CloudyNights.com) and dreaming of a new scope.  I didn't want another huge one so the C8 seemed like the natural choice.  I found one and ordered it (at a very good price) and tonight I had the first chance to use it.

To explain to the layperson new equipment is the bane of astronomers everywhere.  It almost always is succeeded by weeks of bad weather, etc.  For some reason I was able to get it out and try it the second night of having it (unheard of).  That being said let me explain the situation... poor seeing, full moon and new equipment.  I wasn't going to be taking great shots anyway, so I might as well start the learning process of a new piece of equipment so I don't waste a really good night learning my way around it.

I spent about 4 hours working on it getting my feet wet and trying to get a little success (Ring Nebula).

• Finder - the scope didn't come with a finder, but I had an extra red dot in the shed so that wasn't a big deal - still had to align it and the battery isn't awesome so probably need a new battery and possibly later on a nicer finder.  Still... the price is right and it gets the job done.  With my 70 I've not even been using a finder.
• Collimation - Fun fun - I forgot that part of owning a reflector (of any sort) is collimating it.  After spending some time working on it and using my Hotech laser collimator I went to the Interwebs and watched a tutorial on how to laser collimate an SCT.  The irony is to do it you have to have done a star collimation first anyway and marked the spot the laser points to.  So in effect the laser doesn't get you aligned, just gets you back to whatever you originally were.  Still... after trying two different times I achieved a level of collimation I'm not miserable about.  I'm sure I'll get better at it, but for now I'm not worried that I bought a lemon.
• Mount Alignment - Polar alignment of the mount is crucial and after some mucking about and recalibrating I finally reached a decent alignment for taking some shots.  It didn't help that the moon was whitewashing the entire sky, but like I previously mentioned this was supposed to be a dry run anyway.

M51 Whirlpool Galaxy and M57 Ring Nebula

I took these last night from my light polluted front yard with a streetlight beaming in my face.  I didn't get to use the darks I took since apparently JPEGS are too artifact-y to do pixel by pixel noise replacement.

M51 - Whirlpool Galaxy - made up of about 60 1 min subs at ISO 1600 stacked using Deep Sky Stacker (and then adjusted with Photoshop)

M57 - the Ring Nebula - same setup as above, but about 75 subs (all in one whack using my automatic shutter remote once I figured out how to make it work properly).

Help with imaging

I've been reading a CDROM book by Jerry Lodriguss called A Beginner's Guide to DSLR Astrophotography.


It's a really good tool for learning AP especially if you are like me and were trying it with a monster mount and 10" Newt.  I was working myself to death and not balancing my equipment (weight and cost).

His book was why I sold that rig and re-outfitted with this one - http://fovet.blogspot.com/2011/12/starting-over.html

Anyway - here is his website where he shows off tons of awesome pics - www.astropix.com

The part that made me want to tell the world about him was this... I emailed him on his site and he got right back with me the same day with tips on what I was doing wrong.  He's coming out with a new book in the fall for DSLR Planetary Imaging in mind so I can't wait.

Have fun and Clear Skies to all of you,

Robert B.

Club Star Party at Jon Watkins' house

Star party in a blue zone (light pollution minimal) and being able to see the Milky Way is hard to beat.

Crescent Moon - stacked 3 shots at 400 iso 1/400th

Pleiades - nice and bright

I bumped the levels some to show how many stars we had.
Sirius is the bright one in the center of the frame.

Bode's Nebula (M81 and M82)

The reason I bought my first telescope.
Horsehead Nebula on the right (looks like a knight in chess)
and Flame Nebula on the left.

Orion's Nebula
This is probably my last attempt at Orion before it warms up.
This is two different shots blended in the middle to keep detail near the trapezium.
The long exposure was 120 seconds x 22 shots to get about 7 good ones.

Polar Alignment Scope

My new mount (Celestron CG-5) is nice and light, but it didn't come with a polar alignment scope.  Basically it's a telescope that helps you align the axis with the NCP (North Celestial Pole) rather than Polaris (the north star).  Polaris swings around in a circle each night and with this you can aim at the actual NCP and get better alignment.  Sure I'd like an autoguider, but polar alignment is the first step.

I ordered it a few weeks ago and because Amazon has the product listed wrong (without mentioning whether it's a CG-4 or CG-5 scope) I received the wrong one.  Called High Point Scientific and they graciously shipped me the right one and a label to ship the wrong one back.  Fast forward to this afternoon and you'd find me out in the backyard attempting to get it aligned properly.  I have a suspicion that since it was such a booger to get right the last mount I had wasn't aligned correctly.  Calibration is the name of the game in telescope mounts, so I spend about 2 hours learning everything I could about polar scopes.  I took mine apart (due to screwing the alignment screw in too far and having it drop into the scope itself).  I discovered that the focus on the star schematic is to some degree in line with focusing on something fairly distant.  I don't know if you've ever tried it, but focusing on something tall at like 45° is pretty hard unless you have an Empire State Building laying around.

Anyway - I finally got it aligned (3 screws w/ teeny allen heads ) and now it stays true whether the scope holder is on the left or right (and all points in between).  Doesn't mean I'll always get good alignment, but at least I can't blame the polar scope.

Clear Skies :)

Sword of Orion

Last night was my first time using the new scope with the camera (and didn't have the EP protector between the camera and EP adapter).  I'm still working on the other pics, but I had to post this one.  The Sword of Orion contains Orion's Nebula.  This is basically the same as the pic on the last post only much closer and a stacked version of 6 shots.  I did 20 second exposures at 1600 (using the scope as a lens, so no f stop).  I was in the front yard with tons of lights all around me, so I was pretty blown away to get this good of a shot.

Sword of Orion

Betelgeuse (bright star on the left shoulder of Orion)

Moon (about 3 exposures stacked for detail)

Flame Nebula next to Alnitak (the left most star in Orion's Belt)
top is mine and bottom is an example