I just deleted my previous suggestion, realizing that while I know how the Shutterboss works, I am without pertinent Astrotracer experience. Back again...
Here are a few bullet points:
- Set B mode back to "Type 1".
- The Shutterboss' release action work the same as a regular shutter press and if set for a long exposure, it is the same as a "long press" of the regular shutter button.
- Astrotracer has an optional timer feature for up to five minutes. If that is long enough, my suggestion is to use it.
- If using the Astrotracer's timer, operation is a single (instantaneous) shutter press to start the exposure; Astrotracer will take care of the rest.
- If hand timing or using an external timer, Astrotracer requires one press to start and a second press to stop. You don't need to change B mode to "type 2" to accomplish this.
- Shutterboss may be used as a wired remote (using the release button) or as a timer/intervalometer (using the Timer Start/Stop button). See below for how to use it to time Astrotracer.
You can use the Shutterboss to time the Astrotracer exposure, but it is clumsy and cannot be done as an unattended sequence of exposures. Here are the steps, you will need your Shutterboss user manual:
- Reset the Shutterboss to erase all previous timer settings
- Set "INTV" to the desired exposure time minus 1 second
- Set "No." to do two (2) repetitions and no more
- With Astrotracer active and set to NOT use its timer function, press the Shutterboss "Timer Start/Stop" button. Shutterboss will start Astrotracer at the start of the first interval and stop it at the start of the second.
A more sophisticated intervalometer might be able to manage the press-to-start/press-again-to-stop behavior directly for exposure time as well as doing a timed sequence of exposures, but the Shutterboss will not.
Steve