Author: Alex

Using Nikon DSLRs for Astrophotography?

Posted on by Alex
(Last Updated on July 1, 2024)

DSLRs and other “daytime” cameras (such as mirrorless, etc.) are popular choices for astrophotography (especially for imagers with less experience) for many reasons; they are relatively cheap nowadays, they have multiple uses including for normal photography, many people already own them before pursuing astrophotography, and they are less complicated than dedicated astro cameras (although not by much). For these reasons, there are many who use them for astrophotography and many software and hardware offerings exist to allow their usage on various telescopes and mounts. However, there are also downsides, some of which are insurmountable Continue reading “Using Nikon DSLRs for Astrophotography?” →

The Optolong L-Pro 2″ Light Pollution Filter

Posted on by Alex
(Last Updated on February 3, 2023)

The Optolong L-Pro Light pollution filter is a multi-bandpass filter optimized for various emission spectra in reflection nebulae and galaxies, and to remove multiple common artificial light sources as well (such as Mercury or Sodium vapor lamps). It comes in various form factors for individual camera use, or telescope use, including a 2″ and 1.25″ form factor. It contains Continue reading “The Optolong L-Pro 2″ Light Pollution Filter” →

Starizona 0.63x SCT Reducer & Corrector

Posted on by Alex
(Last Updated on July 1, 2024)

The Starizona 0.63x SCT reducer and corrector is a phenomenal piece of equipment for demanding tasks on SCTs, such as deep sky astrophotography with large total integration times. It both decreases the focal length as with a standard reducer, while also flattening the field by eliminating the coma and other optical imperfections present with SCTs in particular. Although this thing isn’t cheap, I found great success with it. The most noteworthy aspect was how it provided a pain-free calibration experience with few discernible gradients that I’ve gotten with other setups. This leads to Continue reading “Starizona 0.63x SCT Reducer & Corrector” →

How to Load PixInsight Process Icons at Startup

Posted on by Alex
(Last Updated on June 21, 2023)

Pixinsight is well known for its process-oriented work environment that allows the application of processes to images regardless of the previous state of the image. This leads to the frequent use of some processes during each imaging set, as well as processes with many settings tweaked for your own needs (such as with ImageIntegration, StarAlignment and MultiscaleLinearTransform). This has led to many people wanting to be able to save a set of process icons to use every time PixInsight loads. Although PixInsight already offers the option to save sets of process icons, you can also set up the program to load any sets that you want on startup, even if you don’t select the set to launch the program! Continue reading “How to Load PixInsight Process Icons at Startup” →

How to Take Bias Frames for DSLRs

Posted on by Alex
(Last Updated on July 1, 2024)

Bias, or offset, frames are the simplest calibration frames utilized in astrophotography because there are no demanding criteria or setup concerns, and they can be saved and used for months. Bias frames are actually fairly important, both for your light frames and for your flat frames. In fact, proper use of bias frames is required in order for flats to calibrate your light frames properly and to remove unwanted artifacts from the lights themselves Continue reading “How to Take Bias Frames for DSLRs” →

Advice for Starting Amateur Astro­photography

Posted on by Alex
(Last Updated on January 25, 2020)

There are many forum posts out there about how people started out in astrophotography and what their advice is for those who are also beginning. Many of these posts are really helpful since it can be overwhelming trying to get started. Here are some of the most common things out there from those giving advice to beginners: get a low focal length scope and image wider fields of view, spend roughly half of your entire budget on the mount, spend a lot of time getting used to aligning and working with your mount and setup, and don’t take on everything at once; small steps.

Generally speaking I think these are good points to consider, especially for those who don’t have a ton of hours a week to spend working on the hobby Continue reading “Advice for Starting Amateur Astro­photography” →

Antares f/6.3 Focal Reducer for SCTs

Posted on by Alex
(Last Updated on July 1, 2024)

Note that most of this article has been revised heavily, because I recently discovered that most of the gradient problems with circular rings were actually caused by Nikon and their alterations to the RAW data. However, not all of the gradients were solvable with those considerations, and because I don’t have this focal reducer anymore to test with, I’ll only state what I can.

The Antares f/6.3 Focal Reducer for Schmidt-Cassegrain Telescopes is a low-price option for reducing the focal length of your Schmidt-Cassegrain telescope from f/10 to f/6.3. This “speeds up” the optical train by reducing the focal length and magnification of the scope, requiring less time to integrate the same signal. A focal reducer along this line is probably the most common accessory bought for SCTs because for beginners Continue reading “Antares f/6.3 Focal Reducer for SCTs” →