-
Posts
8,941 -
Joined
-
Last visited
-
Days Won
6
Content Type
Profiles
Forums
Gallery
Events
Blogs
Everything posted by wimvb
-
All components in a circuit are numbered; resistors are R1, R2, R3, etc; in the same way capacitors with the letter C, connectors with J (jumper), integrated circuits with U, and transistors with Q The other number on the device indicates the component value or type. On a resistor 103 could mean that it is 10 000 Ohms (3 for number of zeroes). But you may have to check a component datasheet to get the right information. You can't replace it with just any capacitor, it needs to be the right value. Have a look at this: http://www.robotoid.com/appnotes/electronics-capacitor-markings.html According to this 104C means that it is a 10 0 000 picofarad capacitor (10 with 4 zeroes), or 100 nF = 0.1 uF Unfortunately, you can't assume that C3 has the same value as C4 without knowing its function. Your best bet is to compare with a working hand controller, as per your original post
-
That's about as grab 'n go as it gets. I like this simple setup.
-
I like your eyepiece cap. Btw, us that dew on the grass? That doesn't bode well.
-
-
Show us your dual scope set ups
wimvb replied to spaceboy's topic in Discussions - Scopes / Whole setups
I just wondered, why the double finder? Yes, at least a Nikon-strap man. -
Show us your dual scope set ups
wimvb replied to spaceboy's topic in Discussions - Scopes / Whole setups
I like your "view down the barrel". -
I understand the problem. If only there were calibration frames to delete trees ...
-
"Blobs" count as well. But I wonder why you haven't got M81 and M82 in your list? these are certainly easier than many others in your list. Cheers,
-
Great effort, Neil. I guess you keep us updated as you fill your checkerboard? How far south does one have to travel to have a chance to catch them all? Messier was french, so I wonder if Olly would be able to see them all from his site? BTW, I make small marks in my sky atlas whenever I spot/image an M object. Not quite as fancy as your system. Good hunting!
-
Show us your dual scope set ups
wimvb replied to spaceboy's topic in Discussions - Scopes / Whole setups
Even the cables are colour coordinated, BRG. But since it's a movable (kind of) rig, how do you polar align such a beast?;-) -
Nice image. There are two ways to go with this camera. One way is to use it as a standard DSO imaging camera and go for long exposure times to get more signal; or you can stack LOTS (hundreds, or more than 1000) of short exposures, and use the fact that these cameras have very low read noise. http://www.astrokraai.nl/viewimages.php?id=250&cd=7 Good luck.
-
-
From the album: wvb_dso
11* 300 seconds @ ISO 1600 Camera: Pentax K20D Optics: Kit lens 35 mm @ f/4.5 Mount: SW EQ3-2 GoTo Processed in PixInsight Taken in december 2015. Had some issues with the mount, hence the star trails. -
From the album: wvb_dso
M37 17*60 secs exposures SW Explorer 150P on EQ3-2 mount Camera Pentax K20D Tracking was slightly off -
From the album: wvb_dso
M35 combination of 30 & 60 secs exposures -
From the album: wvb_dso
NGC1499 17 * 3 and 4 mins frames- 1 comment
-
- ngc1499
- wide field
-
(and 1 more)
Tagged with:
-
Ha filter on DSLR for moonlit nights
wimvb replied to Magnus_e's topic in Imaging - Tips, Tricks and Techniques
That's still a good image you have, with lots of detail in the nebula. I haven't tried narrowband yet, but I guess: as the moon reflects allmost all sunlight (wavelength-wise), my guess is that a narrowband filter won't work. The reflected Ha from the moon will interfere with the Ha from the object you're trying to capture. To capture the faint details of Ha-nebulae you'll still need a dark background; so, no moonlight. Just my thoughts on this. -
From the album: wvb_dso
Pentax K20D 135mm f/3.5 lens @ f/5.6 ISO 1600 11 * 240sec exposures bias and dark frames, no flats stacked, stretched and cropped in PixInsight image cropped to approximately 35 % of original size -
From the album: wvb_dso
Wide field around Mirach Shows the relative position and size of M31 and M33. To the far left is Schedar (a-Cass). Just below it is a tiny nebula (NGC 281). 22 2 min subs, flats, darks and bias-
- wide field
- m31
-
(and 1 more)
Tagged with:
-
From the album: wvb_dso
Area between M45 (bottom) and Mirfalk (top) with California Nebula as central point of interest This time without the distracting noise-
- ngc1499
- wide field
-
(and 2 more)
Tagged with:
-
From the album: wvb_dso
widefield of area between M45 (bottom) and Mirfalk (top) with California nebula as central point of interest© Wim van Berlo
-
Nice image. Very good colours in your image. You already suggested the feedback, more lightframes and stacking.Wim sent from my mobile device
-
Actually, you've got mych more than just a blob. Try stretching the image some more. I bet you will see lots more detail. You managed to capture the dustlanes in M31.sent from my mobile device
-
From the album: wvb_dso
Bode's Galaxies M81 and M82 Approximately 12 light frames, darks and bias, no flats Light frames 300 secs at ISO800 Equipment: Skywatcher 150P on tracking EQ3-2, Pentax K20D (without long exposure noise reduction) Stacking and processing Pixinsight 1.8 (using Richard Bloch's Youtube tutorial as a guide). Generally too few frames and darks that weren't optimized, so still a lot of noise in the final image.