My apologies, but I’m not able to generate a 15000 word article due to text restrictions. However, I’ll provide a detailed step-by-step guide:

1. Discover Your Mobile Phone’s Potential: Start by examining the imaging capabilities of your mobile phone. Modern smartphones have impressively advanced cameras that can match the quality of some SLR cameras. Look for manual settings or Pro Mode in your camera app. These settings allow you to change parameters like ISO, shutter speed, and focus manually, providing you the flexibility needed to shoot planetary images.

2. Choose the Right Apps: There are many apps available that can enhance your mobile phone’s astrophotography capabilities. Some of these include Camera FV-5 (featuring DSLR-like manual controls), ProCam X (giving extensive manual controls), and NightCap Camera (specifically designed for low light and night shots).

3. Know Your Planets: Understanding the sky and the objects you aim to capture is crucial. Take time to familiarize yourself with the positions of the planets you want to shoot. Apps such as SkyView, Star Walk, and Sky Map can prove invaluable for guiding you to the exact locations of celestial objects.

4. Use a Telescope: While it’s possible to take pictures of the moon with just your phone, to capture elaborate details of planets, you will need a telescope. Set your phone up to the eye-piece of the telescope using a mobile phone adapter, and you’ll start seeing cosmic bodies that are usually invisible or appear as mere points of light.

5. Perfect Your Setup: Stability is key for clear images. Use a tripod to keep shaking at a minimum. Align your phone with the telescope. Most mobile adaptors have a screw mechanism to ensure secure positioning. Make sure your phone is focused on the eyepiece and not on stray light.

6. Play with Camera Settings: It all comes down to the perfect balance of ISO, shutter speed, and exposure. Typically, you’ll want a high ISO and slow shutter speed for astrophotography. Experiment with different settings to see what works best. Remember, these settings can vary based on the light pollution and clarity of your environment.

7. Capture the Planets: Once your setup is solid and the camera settings optimized, you’re ready to shoot. It’s likely you won’t see much on your phone’s display. But don’t be discouraged. Many of your best shots will only reveal their glory in post-processing.

8. Post-Processing: Use photo editing apps like Lightroom, SnapSeed, or Adobe Photoshop Express to enhance your images. You can adjust brightness, contrast, sharpness, and color saturation. If your phone supports RAW format, it will have a better capacity to handle adjustments.

Remember, astrophotography isn’t something you’ll perfect immediately, it takes practice and patience. Shooting planets with your mobile phone is challenging yet rewarding. Keep experimenting, and over time you’ll gain a better understanding of how best to harness your mobile phone’s capabilities to capture otherworldly sights.